Finding the Fourth Proportional to 774.72, 1,168.16 and 710.15

Step by Step Solution

1. Step 1: Write the proportion equation
   774.72 : 1,168.16 = 710.15 : x
2. Step 2: Convert to fraction form
   774.72/1,168.16 = 710.15/x
3. Step 3: Cross multiply
   774.72x = 1,168.16 × 710.15
4. Step 4: Simplify right side
   774.72x = 829,564.76
5. Step 5: Solve for x
   x = 829,564.76/774.72
6. Step 6: Final answer
   x = 1,070.79