How to solve the given problem of simple interest?

The problem statement is:

What annual instalment will discharge a debt of 1092 due in 3 years at 12% simple interest?

Now, what I know is

Simple interest =( principal* Rate per annum*Time in years)/(100)

Here, R= 12℅ ,T=3 years but I don’t understand how to move forward.I am not getting the meaning of the problem statement.

I am adding the solution from one book for the given question but I don’t understand it. So can anyone explain it? Or can anyone give there own solution to the given question?

Solution given in the book is

Solutions Collecting From Web of "How to solve the given problem of simple interest?"

Your repayment amount yields an interest of 12% per year. The last installment (the third)does not fetch any interest. The second installment will give 12% interest for one year. That is, the amount $x$ paid at the end of second year would be $x + \frac{x \times 12}{100}$ at the end of third year. The installment you paid at the end of first year will fetch interest for 2 years. Thus it would be $x + \frac{2 \times x \times 12}{100}$. Thus we must have
\begin{align*}
x \text{ (last installment) } + \left(x + \frac{x \times 12}{100}\right) \text{ (second installment) } + x + \frac{2 \times x \times 12}{100} \text{ (first installment) } = 1092
\end{align*}
The rest is clear to you, I suppose.

The problem statement is stating that one will make one payment each year towards the debt.

As I read it, it sounds like the annual installment should be the same from year to year.