Teresita has three financial obligations to the same person: $2800 due in 1 year, $1900 due in 1 ½ years, and $1100 due in 3 years. She wishes to settle the obligations with a single payment in 2 ¼ years, when her inheritance will be released from her mother's estate. What amount should the creditor accept if money can earn 2% compounded quarterly?