Finding the Fourth Proportional to 1,085.82, 1,627.78 and 354.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.82 : 1,627.78 = 354.93 : x
2. Step 2: Convert to fraction form
   1,085.82/1,627.78 = 354.93/x
3. Step 3: Cross multiply
   1,085.82x = 1,627.78 × 354.93
4. Step 4: Simplify right side
   1,085.82x = 577,747.96
5. Step 5: Solve for x
   x = 577,747.96/1,085.82
6. Step 6: Final answer
   x = 532.08