Finding the Fourth Proportional to 1,085.41, 1,627.98 and 355.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.41 : 1,627.98 = 355.06 : x
2. Step 2: Convert to fraction form
   1,085.41/1,627.98 = 355.06/x
3. Step 3: Cross multiply
   1,085.41x = 1,627.98 × 355.06
4. Step 4: Simplify right side
   1,085.41x = 578,030.58
5. Step 5: Solve for x
   x = 578,030.58/1,085.41
6. Step 6: Final answer
   x = 532.55