Finding the Fourth Proportional to 1,085.32, 1,627.86 and 354.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.32 : 1,627.86 = 354.82 : x
2. Step 2: Convert to fraction form
   1,085.32/1,627.86 = 354.82/x
3. Step 3: Cross multiply
   1,085.32x = 1,627.86 × 354.82
4. Step 4: Simplify right side
   1,085.32x = 577,597.29
5. Step 5: Solve for x
   x = 577,597.29/1,085.32
6. Step 6: Final answer
   x = 532.19