Finding the Fourth Proportional to 1,443.15, 2,163.56 and 1,327.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.15 : 2,163.56 = 1,327.83 : x
2. Step 2: Convert to fraction form
   1,443.15/2,163.56 = 1,327.83/x
3. Step 3: Cross multiply
   1,443.15x = 2,163.56 × 1,327.83
4. Step 4: Simplify right side
   1,443.15x = 2,872,839.87
5. Step 5: Solve for x
   x = 2,872,839.87/1,443.15
6. Step 6: Final answer
   x = 1,990.67