Finding the Fourth Proportional to 1,152.97, 1,591.04 and 710.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.97 : 1,591.04 = 710.91 : x
2. Step 2: Convert to fraction form
   1,152.97/1,591.04 = 710.91/x
3. Step 3: Cross multiply
   1,152.97x = 1,591.04 × 710.91
4. Step 4: Simplify right side
   1,152.97x = 1,131,088.02
5. Step 5: Solve for x
   x = 1,131,088.02/1,152.97
6. Step 6: Final answer
   x = 981.02