\[\sqrt[3]{1,99} > \sqrt[4]{0,99};\]
\[так\ как\ \ \sqrt[3]{1,99} = \sqrt[12]{{1,99}^{4}};\ \ \]
\[\sqrt[4]{0,99} = \sqrt[12]{{0,99}^{3}};\]
\[{1,99}^{4} > {0,99}^{3}\text{.\ }\]