Finding the Fourth Proportional to 2,172,149.56, 3,258,118.45 and 806,189.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,149.56 : 3,258,118.45 = 806,189.15 : x
2. Step 2: Convert to fraction form
   2,172,149.56/3,258,118.45 = 806,189.15/x
3. Step 3: Cross multiply
   2,172,149.56x = 3,258,118.45 × 806,189.15
4. Step 4: Simplify right side
   2,172,149.56x = 2,626,659,752,957.85
5. Step 5: Solve for x
   x = 2,626,659,752,957.85/2,172,149.56
6. Step 6: Final answer
   x = 1,209,244.43