Finding the Fourth Proportional to 2,783,665.12, 4,174,242.89 and 986,139.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783,665.12 : 4,174,242.89 = 986,139.75 : x
2. Step 2: Convert to fraction form
   2,783,665.12/4,174,242.89 = 986,139.75/x
3. Step 3: Cross multiply
   2,783,665.12x = 4,174,242.89 × 986,139.75
4. Step 4: Simplify right side
   2,783,665.12x = 4,116,386,839,983.88
5. Step 5: Solve for x
   x = 4,116,386,839,983.88/2,783,665.12
6. Step 6: Final answer
   x = 1,478,765.10