10 points Peace Company's defined benefit pension plan had a PBO of $500,000 on January 1, 2021. During 2021, pension benefits paid were $64,000. The discount rate for the plan for this year was 6%. Service cost for 2021 was $50,000. Plan assets (fair value) increased during the year by $60,000. In 2021, loss due to changes in actuarial assumption in PBO had $24,000. The amount of the PBO at December 31, 2021, was (Do not add dollar sign; do not add comma by yourself to your amount; round the answer to the whole number)