问答题   Banna Co has non-current assets with a cost of $3,800,000 at the start of 20X6.
    During the year the following transactions took place.
    (1)Non-current assets with a cost of $484,000 were purchased.
    (2)Assets costing $250,000 were sold for $120,000.
    (3)A building which had cost of $600,000 and had a carrying amount of $450,000 was revalued to $800,000.
    What is the balance on the non-current assets cost or valuation account at 31 December 20X6? ______