Finding the Fourth Proportional to 2,154,224.69, 3,231,419.05 and 806,245.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,224.69 : 3,231,419.05 = 806,245.37 : x
2. Step 2: Convert to fraction form
   2,154,224.69/3,231,419.05 = 806,245.37/x
3. Step 3: Cross multiply
   2,154,224.69x = 3,231,419.05 × 806,245.37
4. Step 4: Simplify right side
   2,154,224.69x = 2,605,316,643,561.07
5. Step 5: Solve for x
   x = 2,605,316,643,561.07/2,154,224.69
6. Step 6: Final answer
   x = 1,209,398.75