Finding the Fourth Proportional to 2,057,958.96, 3,087,054.96 and 638,216.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057,958.96 : 3,087,054.96 = 638,216.88 : x
2. Step 2: Convert to fraction form
   2,057,958.96/3,087,054.96 = 638,216.88/x
3. Step 3: Cross multiply
   2,057,958.96x = 3,087,054.96 × 638,216.88
4. Step 4: Simplify right side
   2,057,958.96x = 1,970,210,584,959.73
5. Step 5: Solve for x
   x = 1,970,210,584,959.73/2,057,958.96
6. Step 6: Final answer
   x = 957,361.46