Finding the Fourth Proportional to 3,078.94, 4,616.79 and 2,105.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,078.94 : 4,616.79 = 2,105.32 : x
2. Step 2: Convert to fraction form
   3,078.94/4,616.79 = 2,105.32/x
3. Step 3: Cross multiply
   3,078.94x = 4,616.79 × 2,105.32
4. Step 4: Simplify right side
   3,078.94x = 9,719,820.32
5. Step 5: Solve for x
   x = 9,719,820.32/3,078.94
6. Step 6: Final answer
   x = 3,156.87