Finding the Fourth Proportional to 2,621.30, 3,617.43 and 1,442.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.30 : 3,617.43 = 1,442.42 : x
2. Step 2: Convert to fraction form
   2,621.30/3,617.43 = 1,442.42/x
3. Step 3: Cross multiply
   2,621.30x = 3,617.43 × 1,442.42
4. Step 4: Simplify right side
   2,621.30x = 5,217,853.38
5. Step 5: Solve for x
   x = 5,217,853.38/2,621.30
6. Step 6: Final answer
   x = 1,990.56