The no-arbitrage 1-year forward rate in $/€, F($/<span>€) is given by

where S(</span>$/euro) is the spot exchange rate in $/€,

is the interest rate in the US and

<span> is the exchange rate in the Euro zone.
Thus, given that </span>the <span>spot
exchange rate is $1.50/€ and interest rates are 5% apr in the u.s. and
3% apr in the euro zone.
The no-arbitrage 1-year forward rate is given by:

</span>