Finding the Fourth Proportional to 2,208.80, 3,317.76 and 2,134.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.80 : 3,317.76 = 2,134.96 : x
2. Step 2: Convert to fraction form
   2,208.80/3,317.76 = 2,134.96/x
3. Step 3: Cross multiply
   2,208.80x = 3,317.76 × 2,134.96
4. Step 4: Simplify right side
   2,208.80x = 7,083,284.89
5. Step 5: Solve for x
   x = 7,083,284.89/2,208.80
6. Step 6: Final answer
   x = 3,206.85