Finding the Fourth Proportional to 2,808.22, 4,212.71 and 958.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.22 : 4,212.71 = 958.83 : x
2. Step 2: Convert to fraction form
   2,808.22/4,212.71 = 958.83/x
3. Step 3: Cross multiply
   2,808.22x = 4,212.71 × 958.83
4. Step 4: Simplify right side
   2,808.22x = 4,039,272.73
5. Step 5: Solve for x
   x = 4,039,272.73/2,808.22
6. Step 6: Final answer
   x = 1,438.37