Finding the Fourth Proportional to 2,208.81, 3,311.97 and 975.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.81 : 3,311.97 = 975.57 : x
2. Step 2: Convert to fraction form
   2,208.81/3,311.97 = 975.57/x
3. Step 3: Cross multiply
   2,208.81x = 3,311.97 × 975.57
4. Step 4: Simplify right side
   2,208.81x = 3,231,058.57
5. Step 5: Solve for x
   x = 3,231,058.57/2,208.81
6. Step 6: Final answer
   x = 1,462.81