Finding the Fourth Proportional to 2,622.66, 3,619.31 and 1,443.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.66 : 3,619.31 = 1,443.77 : x
2. Step 2: Convert to fraction form
   2,622.66/3,619.31 = 1,443.77/x
3. Step 3: Cross multiply
   2,622.66x = 3,619.31 × 1,443.77
4. Step 4: Simplify right side
   2,622.66x = 5,225,451.20
5. Step 5: Solve for x
   x = 5,225,451.20/2,622.66
6. Step 6: Final answer
   x = 1,992.42