React Router Configure Custom Root

Typically all react router examples that I have seen are with root path starts with "/". Because our server is configured "/" root for a different application, we needed to configure "/ReactApp". With this configuration, I am not able to run nested routes like /ReactApp/Details. Below is my route configuration

<Provider store={store}>
    <Router history={history}>
    <Route path="/ReactApp" component={App}>
        <IndexRoute component={Dashboard} />
        <Route path="detail" component={Detail} />

Trying to achieve below component execution. First route works but not able to run second router

Route ---- Component

/ReactApp ---- App -> Dashboard

/ReactApp/detail ---- App -> Detail

Any pointers?

Thank You