Two pegs P and Q were fixed on opposite banks of a river and the following measurements were made during testing a levelling instrument

Instrument at	Staff Reading At
	P1(m)	Q1(m)
P	3.200	2.100
Q	2.900	1.300

If the reduced level of station Q is 106.500 m, the Reduced level of station P is _____ m. (up to three decimal places. Neglect earth’s curvature and refraction correction.