Finding the Fourth Proportional to 3,977.83, 5,489.54 and 2,209.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.83 : 5,489.54 = 2,209.38 : x
2. Step 2: Convert to fraction form
   3,977.83/5,489.54 = 2,209.38/x
3. Step 3: Cross multiply
   3,977.83x = 5,489.54 × 2,209.38
4. Step 4: Simplify right side
   3,977.83x = 12,128,479.89
5. Step 5: Solve for x
   x = 12,128,479.89/3,977.83
6. Step 6: Final answer
   x = 3,049.02