Finding the Fourth Proportional to 1,061.29, 1,464.48 and 688.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.29 : 1,464.48 = 688.58 : x
2. Step 2: Convert to fraction form
   1,061.29/1,464.48 = 688.58/x
3. Step 3: Cross multiply
   1,061.29x = 1,464.48 × 688.58
4. Step 4: Simplify right side
   1,061.29x = 1,008,418.05
5. Step 5: Solve for x
   x = 1,008,418.05/1,061.29
6. Step 6: Final answer
   x = 950.19