Finding the Fourth Proportional to 2,479,105.78, 3,421,022.25 and 1,391,275.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479,105.78 : 3,421,022.25 = 1,391,275.78 : x
2. Step 2: Convert to fraction form
   2,479,105.78/3,421,022.25 = 1,391,275.78/x
3. Step 3: Cross multiply
   2,479,105.78x = 3,421,022.25 × 1,391,275.78
4. Step 4: Simplify right side
   2,479,105.78x = 4,759,585,399,266.11
5. Step 5: Solve for x
   x = 4,759,585,399,266.11/2,479,105.78
6. Step 6: Final answer
   x = 1,919,879.92