Woz builds a portfolio by investing in two stocks only: Samsung (SMSN) and Nokia (NOK). According to the CAPM, the expected risk premium (i.e., the expected return minus the risk-free rate) of SMSN is 12.3% and the expected risk premium of NOK is 5.96%. The beta of SMSN is equal to 1.23. If Woz puts 77% of his money in SMSN stock and 23% in NOK stock, what is the approximate beta of his portfolio?