Finding the Fourth Proportional to 1,084.69, 1,627.21 and 354.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.69 : 1,627.21 = 354.00 : x
2. Step 2: Convert to fraction form
   1,084.69/1,627.21 = 354.00/x
3. Step 3: Cross multiply
   1,084.69x = 1,627.21 × 354.00
4. Step 4: Simplify right side
   1,084.69x = 576,036.89
5. Step 5: Solve for x
   x = 576,036.89/1,084.69
6. Step 6: Final answer
   x = 531.06