Finding the Fourth Proportional to 3,258.56, 4,884.60 and 2,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,258.56 : 4,884.60 = 2,105.12 : x
2. Step 2: Convert to fraction form
   3,258.56/4,884.60 = 2,105.12/x
3. Step 3: Cross multiply
   3,258.56x = 4,884.60 × 2,105.12
4. Step 4: Simplify right side
   3,258.56x = 10,282,669.15
5. Step 5: Solve for x
   x = 10,282,669.15/3,258.56
6. Step 6: Final answer
   x = 3,155.59