Finding the Fourth Proportional to 1,066.53, 1,598.69 and 489.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.53 : 1,598.69 = 489.27 : x
2. Step 2: Convert to fraction form
   1,066.53/1,598.69 = 489.27/x
3. Step 3: Cross multiply
   1,066.53x = 1,598.69 × 489.27
4. Step 4: Simplify right side
   1,066.53x = 782,188.61
5. Step 5: Solve for x
   x = 782,188.61/1,066.53
6. Step 6: Final answer
   x = 733.40