Finding the Fourth Proportional to 2,621.03, 3,617.10 and 1,442.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.03 : 3,617.10 = 1,442.18 : x
2. Step 2: Convert to fraction form
   2,621.03/3,617.10 = 1,442.18/x
3. Step 3: Cross multiply
   2,621.03x = 3,617.10 × 1,442.18
4. Step 4: Simplify right side
   2,621.03x = 5,216,509.28
5. Step 5: Solve for x
   x = 5,216,509.28/2,621.03
6. Step 6: Final answer
   x = 1,990.25