Finding the Fourth Proportional to 2,191.84, 3,288.33 and 959.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.84 : 3,288.33 = 959.49 : x
2. Step 2: Convert to fraction form
   2,191.84/3,288.33 = 959.49/x
3. Step 3: Cross multiply
   2,191.84x = 3,288.33 × 959.49
4. Step 4: Simplify right side
   2,191.84x = 3,155,119.75
5. Step 5: Solve for x
   x = 3,155,119.75/2,191.84
6. Step 6: Final answer
   x = 1,439.49