Finding the Fourth Proportional to 2,154,188.57, 3,231,364.86 and 806,209.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,188.57 : 3,231,364.86 = 806,209.25 : x
2. Step 2: Convert to fraction form
   2,154,188.57/3,231,364.86 = 806,209.25/x
3. Step 3: Cross multiply
   2,154,188.57x = 3,231,364.86 × 806,209.25
4. Step 4: Simplify right side
   2,154,188.57x = 2,605,156,224,100.13
5. Step 5: Solve for x
   x = 2,605,156,224,100.13/2,154,188.57
6. Step 6: Final answer
   x = 1,209,344.56