Finding the Fourth Proportional to 2,208.71, 3,311.02 and 958.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.71 : 3,311.02 = 958.51 : x
2. Step 2: Convert to fraction form
   2,208.71/3,311.02 = 958.51/x
3. Step 3: Cross multiply
   2,208.71x = 3,311.02 × 958.51
4. Step 4: Simplify right side
   2,208.71x = 3,173,645.78
5. Step 5: Solve for x
   x = 3,173,645.78/2,208.71
6. Step 6: Final answer
   x = 1,436.88