Finding the Fourth Proportional to 3,105.54, 4,660.20 and 2,066.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.54 : 4,660.20 = 2,066.31 : x
2. Step 2: Convert to fraction form
   3,105.54/4,660.20 = 2,066.31/x
3. Step 3: Cross multiply
   3,105.54x = 4,660.20 × 2,066.31
4. Step 4: Simplify right side
   3,105.54x = 9,629,417.86
5. Step 5: Solve for x
   x = 9,629,417.86/3,105.54
6. Step 6: Final answer
   x = 3,100.72