Finding the Fourth Proportional to 1,084.52, 1,626.78 and 354.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.52 : 1,626.78 = 354.10 : x
2. Step 2: Convert to fraction form
   1,084.52/1,626.78 = 354.10/x
3. Step 3: Cross multiply
   1,084.52x = 1,626.78 × 354.10
4. Step 4: Simplify right side
   1,084.52x = 576,042.80
5. Step 5: Solve for x
   x = 576,042.80/1,084.52
6. Step 6: Final answer
   x = 531.15