Finding the Fourth Proportional to 868.32, 1,302.72 and 707.52

Step by Step Solution

1. Step 1: Write the proportion equation
   868.32 : 1,302.72 = 707.52 : x
2. Step 2: Convert to fraction form
   868.32/1,302.72 = 707.52/x
3. Step 3: Cross multiply
   868.32x = 1,302.72 × 707.52
4. Step 4: Simplify right side
   868.32x = 921,700.45
5. Step 5: Solve for x
   x = 921,700.45/868.32
6. Step 6: Final answer
   x = 1,061.48