Finding the Fourth Proportional to 3,976.83, 5,488.15 and 2,208.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.83 : 5,488.15 = 2,208.57 : x
2. Step 2: Convert to fraction form
   3,976.83/5,488.15 = 2,208.57/x
3. Step 3: Cross multiply
   3,976.83x = 5,488.15 × 2,208.57
4. Step 4: Simplify right side
   3,976.83x = 12,120,963.45
5. Step 5: Solve for x
   x = 12,120,963.45/3,976.83
6. Step 6: Final answer
   x = 3,047.90