Finding the Fourth Proportional to 2,061.20, 3,089.84 and 964.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.20 : 3,089.84 = 964.86 : x
2. Step 2: Convert to fraction form
   2,061.20/3,089.84 = 964.86/x
3. Step 3: Cross multiply
   2,061.20x = 3,089.84 × 964.86
4. Step 4: Simplify right side
   2,061.20x = 2,981,258.20
5. Step 5: Solve for x
   x = 2,981,258.20/2,061.20
6. Step 6: Final answer
   x = 1,446.37