Finding the Fourth Proportional to 3,976.28, 5,487.32 and 2,208.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.28 : 5,487.32 = 2,208.05 : x
2. Step 2: Convert to fraction form
   3,976.28/5,487.32 = 2,208.05/x
3. Step 3: Cross multiply
   3,976.28x = 5,487.32 × 2,208.05
4. Step 4: Simplify right side
   3,976.28x = 12,116,276.93
5. Step 5: Solve for x
   x = 12,116,276.93/3,976.28
6. Step 6: Final answer
   x = 3,047.14