Finding the Fourth Proportional to 1,061.92, 1,465.26 and 688.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.92 : 1,465.26 = 688.96 : x
2. Step 2: Convert to fraction form
   1,061.92/1,465.26 = 688.96/x
3. Step 3: Cross multiply
   1,061.92x = 1,465.26 × 688.96
4. Step 4: Simplify right side
   1,061.92x = 1,009,505.53
5. Step 5: Solve for x
   x = 1,009,505.53/1,061.92
6. Step 6: Final answer
   x = 950.64