Finding the Fourth Proportional to 3,105.60, 4,655.15 and 1,255.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.60 : 4,655.15 = 1,255.96 : x
2. Step 2: Convert to fraction form
   3,105.60/4,655.15 = 1,255.96/x
3. Step 3: Cross multiply
   3,105.60x = 4,655.15 × 1,255.96
4. Step 4: Simplify right side
   3,105.60x = 5,846,682.19
5. Step 5: Solve for x
   x = 5,846,682.19/3,105.60
6. Step 6: Final answer
   x = 1,882.63