Finding the Fourth Proportional to 2,622.81, 3,619.55 and 1,443.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.81 : 3,619.55 = 1,443.96 : x
2. Step 2: Convert to fraction form
   2,622.81/3,619.55 = 1,443.96/x
3. Step 3: Cross multiply
   2,622.81x = 3,619.55 × 1,443.96
4. Step 4: Simplify right side
   2,622.81x = 5,226,489.03
5. Step 5: Solve for x
   x = 5,226,489.03/2,622.81
6. Step 6: Final answer
   x = 1,992.70