Hi Vikram,
Greetings from Syncfusion. Currently with our chart source, the last datapoint’s marker location x and y values can be obtained by overriding the drawDataMarker method only. To illustrate this, we have also created a simple chart sample in which we have overridden the drawDataMarker using the onCreateRenderer callback available in the series and attached the sample below for reference. In the drawDataMarker method, you can be able to retrieve the last point’s offset location(x,y).
Please check with above sample and revert us if you still have further concerns.
Regards,
Sriram Kiran