Finding the Fourth Proportional to 1,096.80, 1,643.94 and 964.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.80 : 1,643.94 = 964.76 : x
2. Step 2: Convert to fraction form
   1,096.80/1,643.94 = 964.76/x
3. Step 3: Cross multiply
   1,096.80x = 1,643.94 × 964.76
4. Step 4: Simplify right side
   1,096.80x = 1,586,007.55
5. Step 5: Solve for x
   x = 1,586,007.55/1,096.80
6. Step 6: Final answer
   x = 1,446.04