Finding the Fourth Proportional to 627,010, 865,327.15 and 355,126.25

Step by Step Solution

1. Step 1: Write the proportion equation
   627,010 : 865,327.15 = 355,126.25 : x
2. Step 2: Convert to fraction form
   627,010/865,327.15 = 355,126.25/x
3. Step 3: Cross multiply
   627,010x = 865,327.15 × 355,126.25
4. Step 4: Simplify right side
   627,010x = 307,300,385,802.69
5. Step 5: Solve for x
   x = 307,300,385,802.69/627,010
6. Step 6: Final answer
   x = 490,104.44