Finding the Fourth Proportional to 683,142.30, 1,023,073.20 and 366,902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   683,142.30 : 1,023,073.20 = 366,902.10 : x
2. Step 2: Convert to fraction form
   683,142.30/1,023,073.20 = 366,902.10/x
3. Step 3: Cross multiply
   683,142.30x = 1,023,073.20 × 366,902.10
4. Step 4: Simplify right side
   683,142.30x = 375,367,705,533.72
5. Step 5: Solve for x
   x = 375,367,705,533.72/683,142.30
6. Step 6: Final answer
   x = 549,472.20