Finding the Fourth Proportional to 2,622.45, 3,619.02 and 1,443.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.45 : 3,619.02 = 1,443.54 : x
2. Step 2: Convert to fraction form
   2,622.45/3,619.02 = 1,443.54/x
3. Step 3: Cross multiply
   2,622.45x = 3,619.02 × 1,443.54
4. Step 4: Simplify right side
   2,622.45x = 5,224,200.13
5. Step 5: Solve for x
   x = 5,224,200.13/2,622.45
6. Step 6: Final answer
   x = 1,992.11