Finding the Fourth Proportional to 2,146.54, 3,221.85 and 1,107.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.54 : 3,221.85 = 1,107.27 : x
2. Step 2: Convert to fraction form
   2,146.54/3,221.85 = 1,107.27/x
3. Step 3: Cross multiply
   2,146.54x = 3,221.85 × 1,107.27
4. Step 4: Simplify right side
   2,146.54x = 3,567,457.85
5. Step 5: Solve for x
   x = 3,567,457.85/2,146.54
6. Step 6: Final answer
   x = 1,661.96