Finding the Fourth Proportional to 1,182.30, 1,772.25 and 489.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.30 : 1,772.25 = 489.34 : x
2. Step 2: Convert to fraction form
   1,182.30/1,772.25 = 489.34/x
3. Step 3: Cross multiply
   1,182.30x = 1,772.25 × 489.34
4. Step 4: Simplify right side
   1,182.30x = 867,233.20
5. Step 5: Solve for x
   x = 867,233.20/1,182.30
6. Step 6: Final answer
   x = 733.52