CREATE TABLE table_12419515_4 (written_by VARCHAR2, total_viewers__in_millions_ VARCHAR2)

Who wrote the title that received 1.211 million total viewers?
SELECT written_by FROM table_12419515_4 WHERE total_viewers__in_millions_ = "1.211"
SELECT "written_by" FROM "table_12419515_4" WHERE "1.211" = "total_viewers__in_millions_"