Finding the Fourth Proportional to 1,542,141.59, 2,128,155.12 and 863,078.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542,141.59 : 2,128,155.12 = 863,078.09 : x
2. Step 2: Convert to fraction form
   1,542,141.59/2,128,155.12 = 863,078.09/x
3. Step 3: Cross multiply
   1,542,141.59x = 2,128,155.12 × 863,078.09
4. Step 4: Simplify right side
   1,542,141.59x = 1,836,764,045,552.55
5. Step 5: Solve for x
   x = 1,836,764,045,552.55/1,542,141.59
6. Step 6: Final answer
   x = 1,191,047.61