Finding the Fourth Proportional to 2,490.48, 3,735.90 and 1,028.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.48 : 3,735.90 = 1,028.79 : x
2. Step 2: Convert to fraction form
   2,490.48/3,735.90 = 1,028.79/x
3. Step 3: Cross multiply
   2,490.48x = 3,735.90 × 1,028.79
4. Step 4: Simplify right side
   2,490.48x = 3,843,456.56
5. Step 5: Solve for x
   x = 3,843,456.56/2,490.48
6. Step 6: Final answer
   x = 1,543.26