Finding the Fourth Proportional to 1,105.93, 1,658.33 and 489.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.93 : 1,658.33 = 489.82 : x
2. Step 2: Convert to fraction form
   1,105.93/1,658.33 = 489.82/x
3. Step 3: Cross multiply
   1,105.93x = 1,658.33 × 489.82
4. Step 4: Simplify right side
   1,105.93x = 812,281.55
5. Step 5: Solve for x
   x = 812,281.55/1,105.93
6. Step 6: Final answer
   x = 734.48