Finding the Fourth Proportional to 2,622.39, 3,618.88 and 1,443.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.39 : 3,618.88 = 1,443.48 : x
2. Step 2: Convert to fraction form
   2,622.39/3,618.88 = 1,443.48/x
3. Step 3: Cross multiply
   2,622.39x = 3,618.88 × 1,443.48
4. Step 4: Simplify right side
   2,622.39x = 5,223,780.90
5. Step 5: Solve for x
   x = 5,223,780.90/2,622.39
6. Step 6: Final answer
   x = 1,991.99