Finding the Fourth Proportional to 2,621.89, 3,618.23 and 1,443.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.89 : 3,618.23 = 1,443.04 : x
2. Step 2: Convert to fraction form
   2,621.89/3,618.23 = 1,443.04/x
3. Step 3: Cross multiply
   2,621.89x = 3,618.23 × 1,443.04
4. Step 4: Simplify right side
   2,621.89x = 5,221,250.62
5. Step 5: Solve for x
   x = 5,221,250.62/2,621.89
6. Step 6: Final answer
   x = 1,991.41