Finding the Fourth Proportional to 2,622.59, 3,619.10 and 1,443.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.59 : 3,619.10 = 1,443.63 : x
2. Step 2: Convert to fraction form
   2,622.59/3,619.10 = 1,443.63/x
3. Step 3: Cross multiply
   2,622.59x = 3,619.10 × 1,443.63
4. Step 4: Simplify right side
   2,622.59x = 5,224,650.39
5. Step 5: Solve for x
   x = 5,224,650.39/2,622.59
6. Step 6: Final answer
   x = 1,992.17