Finding the Fourth Proportional to 2,938.78, 4,057.52 and 2,182.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.78 : 4,057.52 = 2,182.75 : x
2. Step 2: Convert to fraction form
   2,938.78/4,057.52 = 2,182.75/x
3. Step 3: Cross multiply
   2,938.78x = 4,057.52 × 2,182.75
4. Step 4: Simplify right side
   2,938.78x = 8,856,530.72
5. Step 5: Solve for x
   x = 8,856,530.72/2,938.78
6. Step 6: Final answer
   x = 3,013.68