Point in time recovery WITHOUT RMAN

I am practicing backup and recovery below.

1.Insert one record into Scott's EMP table

SQL> SELECT CURRENT_SCN FROM V$DATABASE;

CURRENT_SCN-----------    2395700

—Recover here———

2. Add one record to Scott's EMP table

SQL> SELECT CURRENT_SCN FROM V$DATABASE;

CURRENT_SCN-----------   2503913

★I took hot backup here★

3. Failure occurs (data file and control file completely lost)

4. Manually recover to state 1

what should I do to get back to

CURRENT_SCN-----------    2395700

Thank you.