Finding the Fourth Proportional to 2,621.33, 3,617.38 and 1,442.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.33 : 3,617.38 = 1,442.42 : x
2. Step 2: Convert to fraction form
   2,621.33/3,617.38 = 1,442.42/x
3. Step 3: Cross multiply
   2,621.33x = 3,617.38 × 1,442.42
4. Step 4: Simplify right side
   2,621.33x = 5,217,755.96
5. Step 5: Solve for x
   x = 5,217,755.96/2,621.33
6. Step 6: Final answer
   x = 1,990.50