Finding the Fourth Proportional to 749,128.22, 1,123,702.69 and 243,691.83

Step by Step Solution

1. Step 1: Write the proportion equation
   749,128.22 : 1,123,702.69 = 243,691.83 : x
2. Step 2: Convert to fraction form
   749,128.22/1,123,702.69 = 243,691.83/x
3. Step 3: Cross multiply
   749,128.22x = 1,123,702.69 × 243,691.83
4. Step 4: Simplify right side
   749,128.22x = 273,837,164,902.02
5. Step 5: Solve for x
   x = 273,837,164,902.02/749,128.22
6. Step 6: Final answer
   x = 365,541.12