Finding the Fourth Proportional to 1,540,685.52, 2,126,138.76 and 861,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540,685.52 : 2,126,138.76 = 861,624.72 : x
2. Step 2: Convert to fraction form
   1,540,685.52/2,126,138.76 = 861,624.72/x
3. Step 3: Cross multiply
   1,540,685.52x = 2,126,138.76 × 861,624.72
4. Step 4: Simplify right side
   1,540,685.52x = 1,831,933,713,766.15
5. Step 5: Solve for x
   x = 1,831,933,713,766.15/1,540,685.52
6. Step 6: Final answer
   x = 1,189,038.05