Finding the Fourth Proportional to 2,442.55, 3,665.13 and 1,621.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.55 : 3,665.13 = 1,621.21 : x
2. Step 2: Convert to fraction form
   2,442.55/3,665.13 = 1,621.21/x
3. Step 3: Cross multiply
   2,442.55x = 3,665.13 × 1,621.21
4. Step 4: Simplify right side
   2,442.55x = 5,941,927.08
5. Step 5: Solve for x
   x = 5,941,927.08/2,442.55
6. Step 6: Final answer
   x = 2,432.68