Finding the Fourth Proportional to 1,053.27, 1,578.89 and 963.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.27 : 1,578.89 = 963.05 : x
2. Step 2: Convert to fraction form
   1,053.27/1,578.89 = 963.05/x
3. Step 3: Cross multiply
   1,053.27x = 1,578.89 × 963.05
4. Step 4: Simplify right side
   1,053.27x = 1,520,544.53
5. Step 5: Solve for x
   x = 1,520,544.53/1,053.27
6. Step 6: Final answer
   x = 1,443.64