Finding the Fourth Proportional to 1,061.52, 1,464.90 and 688.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.52 : 1,464.90 = 688.64 : x
2. Step 2: Convert to fraction form
   1,061.52/1,464.90 = 688.64/x
3. Step 3: Cross multiply
   1,061.52x = 1,464.90 × 688.64
4. Step 4: Simplify right side
   1,061.52x = 1,008,788.74
5. Step 5: Solve for x
   x = 1,008,788.74/1,061.52
6. Step 6: Final answer
   x = 950.32