Finding the Fourth Proportional to 2,622.58, 3,619.02 and 1,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.58 : 3,619.02 = 1,443.76 : x
2. Step 2: Convert to fraction form
   2,622.58/3,619.02 = 1,443.76/x
3. Step 3: Cross multiply
   2,622.58x = 3,619.02 × 1,443.76
4. Step 4: Simplify right side
   2,622.58x = 5,224,996.32
5. Step 5: Solve for x
   x = 5,224,996.32/2,622.58
6. Step 6: Final answer
   x = 1,992.31