Finding the Fourth Proportional to 1,085.46, 1,627.03 and 354.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.46 : 1,627.03 = 354.84 : x
2. Step 2: Convert to fraction form
   1,085.46/1,627.03 = 354.84/x
3. Step 3: Cross multiply
   1,085.46x = 1,627.03 × 354.84
4. Step 4: Simplify right side
   1,085.46x = 577,335.33
5. Step 5: Solve for x
   x = 577,335.33/1,085.46
6. Step 6: Final answer
   x = 531.88