Finding the Fourth Proportional to 2,622.11, 3,618.48 and 1,443.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.11 : 3,618.48 = 1,443.17 : x
2. Step 2: Convert to fraction form
   2,622.11/3,618.48 = 1,443.17/x
3. Step 3: Cross multiply
   2,622.11x = 3,618.48 × 1,443.17
4. Step 4: Simplify right side
   2,622.11x = 5,222,063.69
5. Step 5: Solve for x
   x = 5,222,063.69/2,622.11
6. Step 6: Final answer
   x = 1,991.55