Finding the Fourth Proportional to 3,977.59, 5,488.90 and 2,209.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.59 : 5,488.90 = 2,209.32 : x
2. Step 2: Convert to fraction form
   3,977.59/5,488.90 = 2,209.32/x
3. Step 3: Cross multiply
   3,977.59x = 5,488.90 × 2,209.32
4. Step 4: Simplify right side
   3,977.59x = 12,126,736.55
5. Step 5: Solve for x
   x = 12,126,736.55/3,977.59
6. Step 6: Final answer
   x = 3,048.76