Finding the Fourth Proportional to 1,100.28, 1,648.80 and 483.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.28 : 1,648.80 = 483.42 : x
2. Step 2: Convert to fraction form
   1,100.28/1,648.80 = 483.42/x
3. Step 3: Cross multiply
   1,100.28x = 1,648.80 × 483.42
4. Step 4: Simplify right side
   1,100.28x = 797,062.90
5. Step 5: Solve for x
   x = 797,062.90/1,100.28
6. Step 6: Final answer
   x = 724.42