CREATE TABLE "table1_224837_4" (
  "district" text,
  "vacator" text,
  "reason_for_change" text,
  "successor" text,
  "date_successor_seated" text
);

Question: Name the date successor seated for contested election; served until february 14, 1794
SQL: SELECT "date_successor_seated" FROM "table1_224837_4" WHERE "reason_for_change"='Contested election; served until February 14, 1794';

Question: Name the date successor seated for delegate seat established
SQL: SELECT "date_successor_seated" FROM "table1_224837_4" WHERE "reason_for_change"='Delegate seat established';

Question: Name the date successor seated is south carolina 3rd
SQL: SELECT "date_successor_seated" FROM "table1_224837_4" WHERE "district"='South Carolina 3rd';