Finding the Fourth Proportional to 1,140,822.43, 1,574,335.41 and 624,609.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,822.43 : 1,574,335.41 = 624,609.78 : x
2. Step 2: Convert to fraction form
   1,140,822.43/1,574,335.41 = 624,609.78/x
3. Step 3: Cross multiply
   1,140,822.43x = 1,574,335.41 × 624,609.78
4. Step 4: Simplify right side
   1,140,822.43x = 983,345,294,086.31
5. Step 5: Solve for x
   x = 983,345,294,086.31/1,140,822.43
6. Step 6: Final answer
   x = 861,961.75