Finding the Fourth Proportional to 2,057,931.90, 3,087,014.49 and 638,189.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057,931.90 : 3,087,014.49 = 638,189.82 : x
2. Step 2: Convert to fraction form
   2,057,931.90/3,087,014.49 = 638,189.82/x
3. Step 3: Cross multiply
   2,057,931.90x = 3,087,014.49 × 638,189.82
4. Step 4: Simplify right side
   2,057,931.90x = 1,970,101,221,710.49
5. Step 5: Solve for x
   x = 1,970,101,221,710.49/2,057,931.90
6. Step 6: Final answer
   x = 957,320.90