Finding the Fourth Proportional to 2,351.20, 3,527.72 and 965.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,351.20 : 3,527.72 = 965.20 : x
2. Step 2: Convert to fraction form
   2,351.20/3,527.72 = 965.20/x
3. Step 3: Cross multiply
   2,351.20x = 3,527.72 × 965.20
4. Step 4: Simplify right side
   2,351.20x = 3,404,955.34
5. Step 5: Solve for x
   x = 3,404,955.34/2,351.20
6. Step 6: Final answer
   x = 1,448.18