Finding the Fourth Proportional to 2,105.52, 3,161.52 and 2,066.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.52 : 3,161.52 = 2,066.64 : x
2. Step 2: Convert to fraction form
   2,105.52/3,161.52 = 2,066.64/x
3. Step 3: Cross multiply
   2,105.52x = 3,161.52 × 2,066.64
4. Step 4: Simplify right side
   2,105.52x = 6,533,723.69
5. Step 5: Solve for x
   x = 6,533,723.69/2,105.52
6. Step 6: Final answer
   x = 3,103.14