Finding the Fourth Proportional to 2,729.22, 4,095.72 and 1,085.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,729.22 : 4,095.72 = 1,085.61 : x
2. Step 2: Convert to fraction form
   2,729.22/4,095.72 = 1,085.61/x
3. Step 3: Cross multiply
   2,729.22x = 4,095.72 × 1,085.61
4. Step 4: Simplify right side
   2,729.22x = 4,446,354.59
5. Step 5: Solve for x
   x = 4,446,354.59/2,729.22
6. Step 6: Final answer
   x = 1,629.17