Finding the Fourth Proportional to 2,643.10, 3,647.82 and 1,509.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.10 : 3,647.82 = 1,509.10 : x
2. Step 2: Convert to fraction form
   2,643.10/3,647.82 = 1,509.10/x
3. Step 3: Cross multiply
   2,643.10x = 3,647.82 × 1,509.10
4. Step 4: Simplify right side
   2,643.10x = 5,504,925.16
5. Step 5: Solve for x
   x = 5,504,925.16/2,643.10
6. Step 6: Final answer
   x = 2,082.75