Finding the Fourth Proportional to 2,726,411.15, 4,090,447.31 and 1,288,198.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726,411.15 : 4,090,447.31 = 1,288,198.94 : x
2. Step 2: Convert to fraction form
   2,726,411.15/4,090,447.31 = 1,288,198.94/x
3. Step 3: Cross multiply
   2,726,411.15x = 4,090,447.31 × 1,288,198.94
4. Step 4: Simplify right side
   2,726,411.15x = 5,269,309,861,974.62
5. Step 5: Solve for x
   x = 5,269,309,861,974.62/2,726,411.15
6. Step 6: Final answer
   x = 1,932,690.85