Finding the Fourth Proportional to 2,726,807.15, 4,089,767.72 and 1,287,487.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726,807.15 : 4,089,767.72 = 1,287,487.78 : x
2. Step 2: Convert to fraction form
   2,726,807.15/4,089,767.72 = 1,287,487.78/x
3. Step 3: Cross multiply
   2,726,807.15x = 4,089,767.72 × 1,287,487.78
4. Step 4: Simplify right side
   2,726,807.15x = 5,265,525,945,876.60
5. Step 5: Solve for x
   x = 5,265,525,945,876.60/2,726,807.15
6. Step 6: Final answer
   x = 1,931,022.49