Finding the Fourth Proportional to 2,622.14, 3,618.57 and 1,443.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.14 : 3,618.57 = 1,443.21 : x
2. Step 2: Convert to fraction form
   2,622.14/3,618.57 = 1,443.21/x
3. Step 3: Cross multiply
   2,622.14x = 3,618.57 × 1,443.21
4. Step 4: Simplify right side
   2,622.14x = 5,222,356.41
5. Step 5: Solve for x
   x = 5,222,356.41/2,622.14
6. Step 6: Final answer
   x = 1,991.64