Finding the Fourth Proportional to 2,639,483.42, 3,959,404.85 and 842,502.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639,483.42 : 3,959,404.85 = 842,502.17 : x
2. Step 2: Convert to fraction form
   2,639,483.42/3,959,404.85 = 842,502.17/x
3. Step 3: Cross multiply
   2,639,483.42x = 3,959,404.85 × 842,502.17
4. Step 4: Simplify right side
   2,639,483.42x = 3,335,807,158,236.50
5. Step 5: Solve for x
   x = 3,335,807,158,236.50/2,639,483.42
6. Step 6: Final answer
   x = 1,263,810.61