1000 = CPN *( \( \frac{1}{1,04} \) + \( \frac{1}{1,0432^2} \)+ \( \frac{1}{1,0453^3} \) + \( \frac{1}{1,0474^4} \) ) +\( \frac{1000}{1,0474^4} \)
1000 = CPN *( \( \frac{25}{26} \) + \( \frac{390625}{425104} \)+0,8755 +0,831 ) +830,9|-830,9
1000 - 830,9= CPN *( \( \frac{25}{26} \) + \( \frac{390625}{425104} \)+0,8755 +0,831 )
1669,1= CPN *3,5869|:3,5869
CPN≈465,332