Finding the Fourth Proportional to 2,138,560.32, 3,207,812.78 and 519,342.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,560.32 : 3,207,812.78 = 519,342.42 : x
2. Step 2: Convert to fraction form
   2,138,560.32/3,207,812.78 = 519,342.42/x
3. Step 3: Cross multiply
   2,138,560.32x = 3,207,812.78 × 519,342.42
4. Step 4: Simplify right side
   2,138,560.32x = 1,665,953,265,399.78
5. Step 5: Solve for x
   x = 1,665,953,265,399.78/2,138,560.32
6. Step 6: Final answer
   x = 779,006.91