Finding the Fourth Proportional to 2,915.98, 4,025.62 and 2,238.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915.98 : 4,025.62 = 2,238.28 : x
2. Step 2: Convert to fraction form
   2,915.98/4,025.62 = 2,238.28/x
3. Step 3: Cross multiply
   2,915.98x = 4,025.62 × 2,238.28
4. Step 4: Simplify right side
   2,915.98x = 9,010,464.73
5. Step 5: Solve for x
   x = 9,010,464.73/2,915.98
6. Step 6: Final answer
   x = 3,090.03