Finding the Fourth Proportional to 2,622.90, 3,619.64 and 1,443.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.90 : 3,619.64 = 1,443.96 : x
2. Step 2: Convert to fraction form
   2,622.90/3,619.64 = 1,443.96/x
3. Step 3: Cross multiply
   2,622.90x = 3,619.64 × 1,443.96
4. Step 4: Simplify right side
   2,622.90x = 5,226,615.37
5. Step 5: Solve for x
   x = 5,226,615.37/2,622.90
6. Step 6: Final answer
   x = 1,992.69