Finding the Fourth Proportional to 2,621.31, 3,617.45 and 1,442.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.31 : 3,617.45 = 1,442.37 : x
2. Step 2: Convert to fraction form
   2,621.31/3,617.45 = 1,442.37/x
3. Step 3: Cross multiply
   2,621.31x = 3,617.45 × 1,442.37
4. Step 4: Simplify right side
   2,621.31x = 5,217,701.36
5. Step 5: Solve for x
   x = 5,217,701.36/2,621.31
6. Step 6: Final answer
   x = 1,990.49