Finding the Fourth Proportional to 1,648.18, 2,472.83 and 494.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.18 : 2,472.83 = 494.10 : x
2. Step 2: Convert to fraction form
   1,648.18/2,472.83 = 494.10/x
3. Step 3: Cross multiply
   1,648.18x = 2,472.83 × 494.10
4. Step 4: Simplify right side
   1,648.18x = 1,221,825.30
5. Step 5: Solve for x
   x = 1,221,825.30/1,648.18
6. Step 6: Final answer
   x = 741.32