Finding the Fourth Proportional to 2,191.30, 3,284.67 and 958.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.30 : 3,284.67 = 958.38 : x
2. Step 2: Convert to fraction form
   2,191.30/3,284.67 = 958.38/x
3. Step 3: Cross multiply
   2,191.30x = 3,284.67 × 958.38
4. Step 4: Simplify right side
   2,191.30x = 3,147,966.40
5. Step 5: Solve for x
   x = 3,147,966.40/2,191.30
6. Step 6: Final answer
   x = 1,436.57