FX forwards By constructing two different portfolios, both of which are worth one unit of foreign currency at time T, prove by replication that the forward price at time t for one unit of foreign currency is given by
![](https://book.transtutors.com/qimg/d84a433a-1bbf-4076-88c3-73225a3814a1.png)
where Xt is the price at time t of one unit of foreign currency and T is the maturity of the forward contract.