Finding the Fourth Proportional to 1,036.02, 1,429.32 and 686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.02 : 1,429.32 = 686.50 : x
2. Step 2: Convert to fraction form
   1,036.02/1,429.32 = 686.50/x
3. Step 3: Cross multiply
   1,036.02x = 1,429.32 × 686.50
4. Step 4: Simplify right side
   1,036.02x = 981,228.18
5. Step 5: Solve for x
   x = 981,228.18/1,036.02
6. Step 6: Final answer
   x = 947.11