CREATE TABLE table_23189 ("Rank" FLOAT, "Mountain Peak" TEXT, "Mountain Range" TEXT, "Elevation" TEXT, "Prominence" TEXT, "Isolation" TEXT)

What's the isolation of the mountain peak with prominence of 1340.549 = 4,397feet 1,340m?
SELECT "Isolation" FROM table_23189 WHERE "Prominence" = '1340.549 = 4,397feet 1,340m'
SELECT "Isolation" FROM "table_23189" WHERE "Prominence" = '1340.549 = 4,397feet 1,340m'