Finding the Fourth Proportional to 2,643.18, 3,647.42 and 1,464.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.18 : 3,647.42 = 1,464.21 : x
2. Step 2: Convert to fraction form
   2,643.18/3,647.42 = 1,464.21/x
3. Step 3: Cross multiply
   2,643.18x = 3,647.42 × 1,464.21
4. Step 4: Simplify right side
   2,643.18x = 5,340,581.52
5. Step 5: Solve for x
   x = 5,340,581.52/2,643.18
6. Step 6: Final answer
   x = 2,020.51