Finding the Fourth Proportional to 2,191.24, 3,287.13 and 958.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.24 : 3,287.13 = 958.56 : x
2. Step 2: Convert to fraction form
   2,191.24/3,287.13 = 958.56/x
3. Step 3: Cross multiply
   2,191.24x = 3,287.13 × 958.56
4. Step 4: Simplify right side
   2,191.24x = 3,150,911.33
5. Step 5: Solve for x
   x = 3,150,911.33/2,191.24
6. Step 6: Final answer
   x = 1,437.96