Finding the Fourth Proportional to 2,622.61, 3,618.96 and 1,443.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.61 : 3,618.96 = 1,443.65 : x
2. Step 2: Convert to fraction form
   2,622.61/3,618.96 = 1,443.65/x
3. Step 3: Cross multiply
   2,622.61x = 3,618.96 × 1,443.65
4. Step 4: Simplify right side
   2,622.61x = 5,224,511.60
5. Step 5: Solve for x
   x = 5,224,511.60/2,622.61
6. Step 6: Final answer
   x = 1,992.11