Finding the Fourth Proportional to 2,621.93, 3,618.15 and 1,443

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.93 : 3,618.15 = 1,443 : x
2. Step 2: Convert to fraction form
   2,621.93/3,618.15 = 1,443/x
3. Step 3: Cross multiply
   2,621.93x = 3,618.15 × 1,443
4. Step 4: Simplify right side
   2,621.93x = 5,220,990.45
5. Step 5: Solve for x
   x = 5,220,990.45/2,621.93
6. Step 6: Final answer
   x = 1,991.28