Finding the Fourth Proportional to 2,622.63, 3,619.26 and 1,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.63 : 3,619.26 = 1,443.72 : x
2. Step 2: Convert to fraction form
   2,622.63/3,619.26 = 1,443.72/x
3. Step 3: Cross multiply
   2,622.63x = 3,619.26 × 1,443.72
4. Step 4: Simplify right side
   2,622.63x = 5,225,198.05
5. Step 5: Solve for x
   x = 5,225,198.05/2,622.63
6. Step 6: Final answer
   x = 1,992.35