Finding the Fourth Proportional to 1,443.24, 2,165.40 and 1,081.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.24 : 2,165.40 = 1,081.08 : x
2. Step 2: Convert to fraction form
   1,443.24/2,165.40 = 1,081.08/x
3. Step 3: Cross multiply
   1,443.24x = 2,165.40 × 1,081.08
4. Step 4: Simplify right side
   1,443.24x = 2,340,970.63
5. Step 5: Solve for x
   x = 2,340,970.63/1,443.24
6. Step 6: Final answer
   x = 1,622.02