Finding the Fourth Proportional to 627,682.72, 866,242.41 and 352,066.45

Step by Step Solution

1. Step 1: Write the proportion equation
   627,682.72 : 866,242.41 = 352,066.45 : x
2. Step 2: Convert to fraction form
   627,682.72/866,242.41 = 352,066.45/x
3. Step 3: Cross multiply
   627,682.72x = 866,242.41 × 352,066.45
4. Step 4: Simplify right side
   627,682.72x = 304,974,890,128.15
5. Step 5: Solve for x
   x = 304,974,890,128.15/627,682.72
6. Step 6: Final answer
   x = 485,874.28