Finding the Fourth Proportional to 2,061.40, 3,091.56 and 965.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.40 : 3,091.56 = 965.20 : x
2. Step 2: Convert to fraction form
   2,061.40/3,091.56 = 965.20/x
3. Step 3: Cross multiply
   2,061.40x = 3,091.56 × 965.20
4. Step 4: Simplify right side
   2,061.40x = 2,983,973.71
5. Step 5: Solve for x
   x = 2,983,973.71/2,061.40
6. Step 6: Final answer
   x = 1,447.55