Finding the Fourth Proportional to 627,864.83, 866,429.57 and 341,385.15

Step by Step Solution

1. Step 1: Write the proportion equation
   627,864.83 : 866,429.57 = 341,385.15 : x
2. Step 2: Convert to fraction form
   627,864.83/866,429.57 = 341,385.15/x
3. Step 3: Cross multiply
   627,864.83x = 866,429.57 × 341,385.15
4. Step 4: Simplify right side
   627,864.83x = 295,786,188,718.89
5. Step 5: Solve for x
   x = 295,786,188,718.89/627,864.83
6. Step 6: Final answer
   x = 471,098.51