Finding the Fourth Proportional to 2,781.27, 4,171.50 and 932.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.27 : 4,171.50 = 932.31 : x
2. Step 2: Convert to fraction form
   2,781.27/4,171.50 = 932.31/x
3. Step 3: Cross multiply
   2,781.27x = 4,171.50 × 932.31
4. Step 4: Simplify right side
   2,781.27x = 3,889,131.17
5. Step 5: Solve for x
   x = 3,889,131.17/2,781.27
6. Step 6: Final answer
   x = 1,398.33