Hi Hardik Parmar,
Greetings from Syncfusion.
We have prepared a sample based on your requirement, in which we have set the Offset and SelectedItemOffset property of SfCarousel to minimum value. So that, on view we can have only 3 items on selecting the 3rd item it will be at the center and 4th item will come to the view. Please download the sample for the same from the link given below.
Please share additional details if your requirement differs from the provided sample.