Finding the Fourth Proportional to 2,621.36, 3,617.46 and 1,442.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.36 : 3,617.46 = 1,442.43 : x
2. Step 2: Convert to fraction form
   2,621.36/3,617.46 = 1,442.43/x
3. Step 3: Cross multiply
   2,621.36x = 3,617.46 × 1,442.43
4. Step 4: Simplify right side
   2,621.36x = 5,217,932.83
5. Step 5: Solve for x
   x = 5,217,932.83/2,621.36
6. Step 6: Final answer
   x = 1,990.54