Finding the Fourth Proportional to 1,101.09, 1,648.38 and 964.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.09 : 1,648.38 = 964.41 : x
2. Step 2: Convert to fraction form
   1,101.09/1,648.38 = 964.41/x
3. Step 3: Cross multiply
   1,101.09x = 1,648.38 × 964.41
4. Step 4: Simplify right side
   1,101.09x = 1,589,711.59
5. Step 5: Solve for x
   x = 1,589,711.59/1,101.09
6. Step 6: Final answer
   x = 1,443.76