Finding the Fourth Proportional to 2,206,196.79, 3,308,442.25 and 858,177.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,206,196.79 : 3,308,442.25 = 858,177.37 : x
2. Step 2: Convert to fraction form
   2,206,196.79/3,308,442.25 = 858,177.37/x
3. Step 3: Cross multiply
   2,206,196.79x = 3,308,442.25 × 858,177.37
4. Step 4: Simplify right side
   2,206,196.79x = 2,839,230,268,901.88
5. Step 5: Solve for x
   x = 2,839,230,268,901.88/2,206,196.79
6. Step 6: Final answer
   x = 1,286,934.28