Finding the Fourth Proportional to 2,621.73, 3,617.85 and 1,442.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.73 : 3,617.85 = 1,442.58 : x
2. Step 2: Convert to fraction form
   2,621.73/3,617.85 = 1,442.58/x
3. Step 3: Cross multiply
   2,621.73x = 3,617.85 × 1,442.58
4. Step 4: Simplify right side
   2,621.73x = 5,219,038.05
5. Step 5: Solve for x
   x = 5,219,038.05/2,621.73
6. Step 6: Final answer
   x = 1,990.68