Finding the Fourth Proportional to 2,622.56, 3,619.12 and 1,443.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.56 : 3,619.12 = 1,443.63 : x
2. Step 2: Convert to fraction form
   2,622.56/3,619.12 = 1,443.63/x
3. Step 3: Cross multiply
   2,622.56x = 3,619.12 × 1,443.63
4. Step 4: Simplify right side
   2,622.56x = 5,224,663.87
5. Step 5: Solve for x
   x = 5,224,663.87/2,622.56
6. Step 6: Final answer
   x = 1,992.20