Finding the Fourth Proportional to 2,087,288.14, 3,131,378.49 and 647,939.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,288.14 : 3,131,378.49 = 647,939.98 : x
2. Step 2: Convert to fraction form
   2,087,288.14/3,131,378.49 = 647,939.98/x
3. Step 3: Cross multiply
   2,087,288.14x = 3,131,378.49 × 647,939.98
4. Step 4: Simplify right side
   2,087,288.14x = 2,028,945,316,183.03
5. Step 5: Solve for x
   x = 2,028,945,316,183.03/2,087,288.14
6. Step 6: Final answer
   x = 972,048.51