Finding the Fourth Proportional to 1,407.46, 1,940.46 and 964.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.46 : 1,940.46 = 964.60 : x
2. Step 2: Convert to fraction form
   1,407.46/1,940.46 = 964.60/x
3. Step 3: Cross multiply
   1,407.46x = 1,940.46 × 964.60
4. Step 4: Simplify right side
   1,407.46x = 1,871,767.72
5. Step 5: Solve for x
   x = 1,871,767.72/1,407.46
6. Step 6: Final answer
   x = 1,329.89