Finding the Fourth Proportional to 2,640.82, 3,644.38 and 1,522.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.82 : 3,644.38 = 1,522.12 : x
2. Step 2: Convert to fraction form
   2,640.82/3,644.38 = 1,522.12/x
3. Step 3: Cross multiply
   2,640.82x = 3,644.38 × 1,522.12
4. Step 4: Simplify right side
   2,640.82x = 5,547,183.69
5. Step 5: Solve for x
   x = 5,547,183.69/2,640.82
6. Step 6: Final answer
   x = 2,100.55