Answer
The perimeter of the triangle is $2237\frac{1}{4}$ feet.
Work Step by Step
The perimeter of a triangle is equal to the sum of the lengths of its sides.
Add the lengths of the three sides to obtain:
Perimeter
$=712\frac{3}{4} + 563 + 961\frac{1}{2}
\\=(712+563+961) + (\frac{3}{4}+\frac{1}{2})
\\=2236 + (\frac{3}{4}+\frac{2}{4})
\\=2236+\frac{5}{4}
\\=2236+1\frac{1}{4}
\\=2237\frac{1}{4}$
Thus, the perimeter of the triangle is $2237\frac{1}{4}$ feet.