Finding the Fourth Proportional to 2,841.12, 4,258.71 and 1,085.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,841.12 : 4,258.71 = 1,085.85 : x
2. Step 2: Convert to fraction form
   2,841.12/4,258.71 = 1,085.85/x
3. Step 3: Cross multiply
   2,841.12x = 4,258.71 × 1,085.85
4. Step 4: Simplify right side
   2,841.12x = 4,624,320.25
5. Step 5: Solve for x
   x = 4,624,320.25/2,841.12
6. Step 6: Final answer
   x = 1,627.64