Finding the Fourth Proportional to 2,826,411.60, 4,238,158.20 and 831,608.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826,411.60 : 4,238,158.20 = 831,608.40 : x
2. Step 2: Convert to fraction form
   2,826,411.60/4,238,158.20 = 831,608.40/x
3. Step 3: Cross multiply
   2,826,411.60x = 4,238,158.20 × 831,608.40
4. Step 4: Simplify right side
   2,826,411.60x = 3,524,487,959,648.88
5. Step 5: Solve for x
   x = 3,524,487,959,648.88/2,826,411.60
6. Step 6: Final answer
   x = 1,246,983.26