Finding the Fourth Proportional to 3,078.56, 4,620.12 and 2,258.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,078.56 : 4,620.12 = 2,258.96 : x
2. Step 2: Convert to fraction form
   3,078.56/4,620.12 = 2,258.96/x
3. Step 3: Cross multiply
   3,078.56x = 4,620.12 × 2,258.96
4. Step 4: Simplify right side
   3,078.56x = 10,436,666.28
5. Step 5: Solve for x
   x = 10,436,666.28/3,078.56
6. Step 6: Final answer
   x = 3,390.11