CREATE TABLE table_39347 ("County" TEXT, "1948" FLOAT, "1956" FLOAT, "1966" FLOAT, "1977" FLOAT, "1992" FLOAT, "2002" FLOAT, "2011" FLOAT)

Which 1992 is the lowest one that has a 1977 smaller than 385577, and a 2011 larger than 340310, and a 2002 larger than 300123, and a 1948 larger than 280524?
SELECT MIN("1992") FROM table_39347 WHERE "1977" < '385577' AND "2011" > '340310' AND "2002" > '300123' AND "1948" > '280524'
SELECT MIN("1992") FROM "table_39347" WHERE "1948" > '280524' AND "1977" < '385577' AND "2002" > '300123' AND "2011" > '340310'