Finding the Fourth Proportional to 2,621.94, 3,618.37 and 1,443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.94 : 3,618.37 = 1,443.10 : x
2. Step 2: Convert to fraction form
   2,621.94/3,618.37 = 1,443.10/x
3. Step 3: Cross multiply
   2,621.94x = 3,618.37 × 1,443.10
4. Step 4: Simplify right side
   2,621.94x = 5,221,669.75
5. Step 5: Solve for x
   x = 5,221,669.75/2,621.94
6. Step 6: Final answer
   x = 1,991.53