Finding the Fourth Proportional to 1,551,118.71, 2,140,543.72 and 872,055.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551,118.71 : 2,140,543.72 = 872,055.21 : x
2. Step 2: Convert to fraction form
   1,551,118.71/2,140,543.72 = 872,055.21/x
3. Step 3: Cross multiply
   1,551,118.71x = 2,140,543.72 × 872,055.21
4. Step 4: Simplify right side
   1,551,118.71x = 1,866,672,303,258.78
5. Step 5: Solve for x
   x = 1,866,672,303,258.78/1,551,118.71
6. Step 6: Final answer
   x = 1,203,436.13