Finding the Fourth Proportional to 1,084.48, 1,626.55 and 353.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.48 : 1,626.55 = 353.89 : x
2. Step 2: Convert to fraction form
   1,084.48/1,626.55 = 353.89/x
3. Step 3: Cross multiply
   1,084.48x = 1,626.55 × 353.89
4. Step 4: Simplify right side
   1,084.48x = 575,626.32
5. Step 5: Solve for x
   x = 575,626.32/1,084.48
6. Step 6: Final answer
   x = 530.79