[tex]4320 - 120\% \\ x - 100\% \\ \\ x = \frac{4320 \times 100}{120} = \frac{432000}{120} = 3600zl[/tex]
[tex]3600 - 120\% \\ x - 100\% \\ \\ x = \frac{3600 \times 100}{120} = \frac{360000}{120} = 3000zl[/tex]
[tex]3000 - 120\% \\ x - 100\% \\ \\ x = \frac{3000 \times 100}{120} = \frac{300000}{120} = 2500zl[/tex]
[tex] \boxed{ \boxed{Odp. 2500zl}}[/tex]