Finding the Fourth Proportional to 2,112,268.86, 2,915,085.51 and 1,206,831.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112,268.86 : 2,915,085.51 = 1,206,831.42 : x
2. Step 2: Convert to fraction form
   2,112,268.86/2,915,085.51 = 1,206,831.42/x
3. Step 3: Cross multiply
   2,112,268.86x = 2,915,085.51 × 1,206,831.42
4. Step 4: Simplify right side
   2,112,268.86x = 3,518,016,785,454.72
5. Step 5: Solve for x
   x = 3,518,016,785,454.72/2,112,268.86
6. Step 6: Final answer
   x = 1,665,515.62