Finding the Fourth Proportional to 3,977.22, 5,488.32 and 2,208.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.22 : 5,488.32 = 2,208.72 : x
2. Step 2: Convert to fraction form
   3,977.22/5,488.32 = 2,208.72/x
3. Step 3: Cross multiply
   3,977.22x = 5,488.32 × 2,208.72
4. Step 4: Simplify right side
   3,977.22x = 12,122,162.15
5. Step 5: Solve for x
   x = 12,122,162.15/3,977.22
6. Step 6: Final answer
   x = 3,047.90