Finding the Fourth Proportional to 3,123.29, 4,685.61 and 932.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.29 : 4,685.61 = 932.20 : x
2. Step 2: Convert to fraction form
   3,123.29/4,685.61 = 932.20/x
3. Step 3: Cross multiply
   3,123.29x = 4,685.61 × 932.20
4. Step 4: Simplify right side
   3,123.29x = 4,367,925.64
5. Step 5: Solve for x
   x = 4,367,925.64/3,123.29
6. Step 6: Final answer
   x = 1,398.50