Finding the Fourth Proportional to 1,542,142.59, 2,128,156.50 and 863,079.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542,142.59 : 2,128,156.50 = 863,079.09 : x
2. Step 2: Convert to fraction form
   1,542,142.59/2,128,156.50 = 863,079.09/x
3. Step 3: Cross multiply
   1,542,142.59x = 2,128,156.50 × 863,079.09
4. Step 4: Simplify right side
   1,542,142.59x = 1,836,767,375,397.59
5. Step 5: Solve for x
   x = 1,836,767,375,397.59/1,542,142.59
6. Step 6: Final answer
   x = 1,191,048.99