Finding the Fourth Proportional to 2,117,983.38, 3,175,111.78 and 839,488.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,983.38 : 3,175,111.78 = 839,488.26 : x
2. Step 2: Convert to fraction form
   2,117,983.38/3,175,111.78 = 839,488.26/x
3. Step 3: Cross multiply
   2,117,983.38x = 3,175,111.78 × 839,488.26
4. Step 4: Simplify right side
   2,117,983.38x = 2,665,469,073,305.65
5. Step 5: Solve for x
   x = 2,665,469,073,305.65/2,117,983.38
6. Step 6: Final answer
   x = 1,258,493.86