Finding the Fourth Proportional to 3,977.31, 5,488.65 and 2,208.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.31 : 5,488.65 = 2,208.81 : x
2. Step 2: Convert to fraction form
   3,977.31/5,488.65 = 2,208.81/x
3. Step 3: Cross multiply
   3,977.31x = 5,488.65 × 2,208.81
4. Step 4: Simplify right side
   3,977.31x = 12,123,385.01
5. Step 5: Solve for x
   x = 12,123,385.01/3,977.31
6. Step 6: Final answer
   x = 3,048.14