Finding the Fourth Proportional to 636,229.02, 877,978.71 and 349,749.18

Step by Step Solution

1. Step 1: Write the proportion equation
   636,229.02 : 877,978.71 = 349,749.18 : x
2. Step 2: Convert to fraction form
   636,229.02/877,978.71 = 349,749.18/x
3. Step 3: Cross multiply
   636,229.02x = 877,978.71 × 349,749.18
4. Step 4: Simplify right side
   636,229.02x = 307,072,333,879.96
5. Step 5: Solve for x
   x = 307,072,333,879.96/636,229.02
6. Step 6: Final answer
   x = 482,644.34