Finding the Fourth Proportional to 2,326.85, 3,490.42 and 1,028.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.85 : 3,490.42 = 1,028.31 : x
2. Step 2: Convert to fraction form
   2,326.85/3,490.42 = 1,028.31/x
3. Step 3: Cross multiply
   2,326.85x = 3,490.42 × 1,028.31
4. Step 4: Simplify right side
   2,326.85x = 3,589,233.79
5. Step 5: Solve for x
   x = 3,589,233.79/2,326.85
6. Step 6: Final answer
   x = 1,542.53