Finding the Fourth Proportional to 1,140,641.55, 1,573,920.59 and 631,342.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,641.55 : 1,573,920.59 = 631,342.71 : x
2. Step 2: Convert to fraction form
   1,140,641.55/1,573,920.59 = 631,342.71/x
3. Step 3: Cross multiply
   1,140,641.55x = 1,573,920.59 × 631,342.71
4. Step 4: Simplify right side
   1,140,641.55x = 993,683,287,458.69
5. Step 5: Solve for x
   x = 993,683,287,458.69/1,140,641.55
6. Step 6: Final answer
   x = 871,161.75