Finding the Fourth Proportional to 663,654.50, 915,843.42 and 377,167.22

Step by Step Solution

1. Step 1: Write the proportion equation
   663,654.50 : 915,843.42 = 377,167.22 : x
2. Step 2: Convert to fraction form
   663,654.50/915,843.42 = 377,167.22/x
3. Step 3: Cross multiply
   663,654.50x = 915,843.42 × 377,167.22
4. Step 4: Simplify right side
   663,654.50x = 345,426,112,097.48
5. Step 5: Solve for x
   x = 345,426,112,097.48/663,654.50
6. Step 6: Final answer
   x = 520,490.88