Investment Six months ago, an investment company had a $3,100,000 portfolio consisting of...

Investment Six months ago, an investment company had a $3,100,000 portfolio consisting of blue-chip and glamour stocks. Since then, the value of the blue-chip investment increased by , whereas the value of the glamour stocks decreased by . The current value of the portfolio is $3,240,000. What is the current value of the blue-chip investment?