I want run applications x86 on Raspberry Pi 3. Is possible install Windows IoT Enterprise on RaspberryPi 3 ?
If you 'just' want to run x86 apps on the Pi, try ExaGear Desktop. It's not perfect, but it might give you what you want.
No, you cannot run Windows 10 IOT Enterprise. As is, the IOT flavor of enterprise is just a headless optimized version of the desktop version. The enterprise version still requires an x86 processor.
The RPi has an ARM processor which is fundamentally incompatible with your goals.
Windows 10 IoT Enterprise is a full version of Windows 10 that delivers enterprise manageability and security to IoT solutions. It is designed for powerful industry devices used in retail, manufacturing, healthcare, and other industries. Note: Windows 10 IoT Enterprise is a binary equivalent to Windows 10 Enterprise. (emphasis mine)