Concept:
Professional social work education in India began with the establishment of specialized institutions.
Step 1:
The Sir Dorabji Tata Graduate School of Social Work was the first professional social work institution in India.
Step 2:
The institution later became the Tata Institute of Social Sciences (TISS), Mumbai.
Step 3:
It was established in the year 1936.
Step 4:
The years 1901, 1919, and 1948 do not correspond to the establishment year of this institution.
Step 5:
Therefore, the correct answer is:
\[
1936
\]
\[
\boxed{\text{(3) 1936}}
\]