Finding the Fourth Proportional to 2,639,401.68, 3,959,171.32 and 842,282.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639,401.68 : 3,959,171.32 = 842,282.72 : x
2. Step 2: Convert to fraction form
   2,639,401.68/3,959,171.32 = 842,282.72/x
3. Step 3: Cross multiply
   2,639,401.68x = 3,959,171.32 × 842,282.72
4. Step 4: Simplify right side
   2,639,401.68x = 3,334,741,588,355.59
5. Step 5: Solve for x
   x = 3,334,741,588,355.59/2,639,401.68
6. Step 6: Final answer
   x = 1,263,446.04