Finding the Fourth Proportional to 3,976.86, 5,487.97 and 2,208.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.86 : 5,487.97 = 2,208.43 : x
2. Step 2: Convert to fraction form
   3,976.86/5,487.97 = 2,208.43/x
3. Step 3: Cross multiply
   3,976.86x = 5,487.97 × 2,208.43
4. Step 4: Simplify right side
   3,976.86x = 12,119,797.59
5. Step 5: Solve for x
   x = 12,119,797.59/3,976.86
6. Step 6: Final answer
   x = 3,047.58