Finding the Fourth Proportional to 2,621.50, 3,617.62 and 1,442.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.50 : 3,617.62 = 1,442.55 : x
2. Step 2: Convert to fraction form
   2,621.50/3,617.62 = 1,442.55/x
3. Step 3: Cross multiply
   2,621.50x = 3,617.62 × 1,442.55
4. Step 4: Simplify right side
   2,621.50x = 5,218,597.73
5. Step 5: Solve for x
   x = 5,218,597.73/2,621.50
6. Step 6: Final answer
   x = 1,990.69