Finding the Fourth Proportional to 3,977.40, 5,488.54 and 2,208.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.40 : 5,488.54 = 2,208.94 : x
2. Step 2: Convert to fraction form
   3,977.40/5,488.54 = 2,208.94/x
3. Step 3: Cross multiply
   3,977.40x = 5,488.54 × 2,208.94
4. Step 4: Simplify right side
   3,977.40x = 12,123,855.55
5. Step 5: Solve for x
   x = 12,123,855.55/3,977.40
6. Step 6: Final answer
   x = 3,048.19