We can draw the following picture:
where we can see that triangle PSR is a right one. Then, we can apply Pytagorean theorem to find PR:

then, PR is given by
![PR=\sqrt[]{(2.6)^2+4^2}](https://img.qammunity.org/2023/formulas/mathematics/college/7tgdbhvqabmveinoc2v33lhybyl9a9inzo.png)
which gives
![\begin{gathered} PR=\sqrt[]{6.76+16} \\ PR=\sqrt[]{22.76} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/axrzuvli54yjhntue2b1sou8sk4au8wwa9.png)
therefore, PR is equal to 4.77 m. By rounding up to the nearest whole number, the answer is PR= 5 m.