Finding the Fourth Proportional to 1,108,915.54, 1,530,321.06 and 625,490.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108,915.54 : 1,530,321.06 = 625,490.30 : x
2. Step 2: Convert to fraction form
   1,108,915.54/1,530,321.06 = 625,490.30/x
3. Step 3: Cross multiply
   1,108,915.54x = 1,530,321.06 × 625,490.30
4. Step 4: Simplify right side
   1,108,915.54x = 957,200,978,915.72
5. Step 5: Solve for x
   x = 957,200,978,915.72/1,108,915.54
6. Step 6: Final answer
   x = 863,186.55