Can you provide any justification for that figure?
My figure at least comes from company guidance for revenue and a knowledge of how fuel expenses and other expenses are likely to change year on year.
Or are you just taking last year's figure and adding a bit? In which case, do you have any idea of the difference between pre-tax profit/loss, operating profit/loss and total profit/loss?
Seriously, you can do damage to a company's reputation by posting spurious guesses about their finances, so you'd want to have some idea of why you think that figure is likely.