To satisfy the requirements for member (1):

$$\begin{gathered} \mathrm{P}\le 1.06083 {\mathrm{F}}_1 \\ \le 1.06083(554.4 \mathrm{kN}) \\ \le 588.12 \mathrm{kN} \end{gathered}$$

To satisfy the requirements for member (2):

$$\begin{gathered} \mathrm{P}\le \left|-1.47557 {\mathrm{F}}_2\right| \\ \le \left|-1.47557(348.75 \mathrm{kN})\right| \\ \le 514.61 \mathrm{kN} \end{gathered}$$

To satisfy the limitations for both axial members, the load $\mathrm{P}$ must be less than $514 \mathrm{kN}$.

Finished