Finding the Fourth Proportional to 2,621.50, 3,617.58 and 1,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.50 : 3,617.58 = 1,442.50 : x
2. Step 2: Convert to fraction form
   2,621.50/3,617.58 = 1,442.50/x
3. Step 3: Cross multiply
   2,621.50x = 3,617.58 × 1,442.50
4. Step 4: Simplify right side
   2,621.50x = 5,218,359.15
5. Step 5: Solve for x
   x = 5,218,359.15/2,621.50
6. Step 6: Final answer
   x = 1,990.60