Finding the Fourth Proportional to 2,621.95, 3,618.32 and 1,443.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.95 : 3,618.32 = 1,443.05 : x
2. Step 2: Convert to fraction form
   2,621.95/3,618.32 = 1,443.05/x
3. Step 3: Cross multiply
   2,621.95x = 3,618.32 × 1,443.05
4. Step 4: Simplify right side
   2,621.95x = 5,221,416.68
5. Step 5: Solve for x
   x = 5,221,416.68/2,621.95
6. Step 6: Final answer
   x = 1,991.42