Finding the Fourth Proportional to 2,415.31, 3,623.28 and 1,028.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.31 : 3,623.28 = 1,028.41 : x
2. Step 2: Convert to fraction form
   2,415.31/3,623.28 = 1,028.41/x
3. Step 3: Cross multiply
   2,415.31x = 3,623.28 × 1,028.41
4. Step 4: Simplify right side
   2,415.31x = 3,726,217.38
5. Step 5: Solve for x
   x = 3,726,217.38/2,415.31
6. Step 6: Final answer
   x = 1,542.75