No one sibling can force a sale, but if there is a compelling reason for wanting the property sold you can try to obtain a court order. You would have to write to your other siblings via a solicitor, setting out a strong case for the sale - this gives them the opportunity to discuss and set out their reasons for disputing a sale, after which you can then apply for a court order. Success ultimately depends on who makes the more compelling case.
In the event that the house is not sold, you might want to give some thought as to the ‘tenancy’ of each sibling. If you are joint tenants, all siblings have equal rights to the entire house and if any sibling dies, their share passes to the other joint tenants. This means that only the final surviving brother or sister can make a provision in their will to leave the property to someone. If siblings decide to become tenants in common, each sibling will own a defined portion of the house.