Finding the Fourth Proportional to 551,436.38, 760,892.72 and 344,680.30

Step by Step Solution

1. Step 1: Write the proportion equation
   551,436.38 : 760,892.72 = 344,680.30 : x
2. Step 2: Convert to fraction form
   551,436.38/760,892.72 = 344,680.30/x
3. Step 3: Cross multiply
   551,436.38x = 760,892.72 × 344,680.30
4. Step 4: Simplify right side
   551,436.38x = 262,264,730,997.42
5. Step 5: Solve for x
   x = 262,264,730,997.42/551,436.38
6. Step 6: Final answer
   x = 475,602.88