Finding the Fourth Proportional to 3,976.96, 5,488.20 and 2,208.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.96 : 5,488.20 = 2,208.56 : x
2. Step 2: Convert to fraction form
   3,976.96/5,488.20 = 2,208.56/x
3. Step 3: Cross multiply
   3,976.96x = 5,488.20 × 2,208.56
4. Step 4: Simplify right side
   3,976.96x = 12,121,021.67
5. Step 5: Solve for x
   x = 12,121,021.67/3,976.96
6. Step 6: Final answer
   x = 3,047.81