Finding the Fourth Proportional to 2,621.56, 3,617.73 and 1,442.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.56 : 3,617.73 = 1,442.61 : x
2. Step 2: Convert to fraction form
   2,621.56/3,617.73 = 1,442.61/x
3. Step 3: Cross multiply
   2,621.56x = 3,617.73 × 1,442.61
4. Step 4: Simplify right side
   2,621.56x = 5,218,973.48
5. Step 5: Solve for x
   x = 5,218,973.48/2,621.56
6. Step 6: Final answer
   x = 1,990.79