Finding the Fourth Proportional to 2,081.22, 3,122.28 and 1,107.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.22 : 3,122.28 = 1,107.18 : x
2. Step 2: Convert to fraction form
   2,081.22/3,122.28 = 1,107.18/x
3. Step 3: Cross multiply
   2,081.22x = 3,122.28 × 1,107.18
4. Step 4: Simplify right side
   2,081.22x = 3,456,925.97
5. Step 5: Solve for x
   x = 3,456,925.97/2,081.22
6. Step 6: Final answer
   x = 1,661.01