Please show detailed workings. (Answer: 4.4737)

A year ago, the exchange rate of the foreign currency Australia dollar (A\$) against the home currency Malaysian ringgit (MYR) was MYR4.4294/A\$. After one year, point C in the following graph represents a disparity in the purchasing power parity (PPP) where Ih and If is the inflation of MYR and A$, respectively. What is the spot rate of the Australian dollar against the Malaysian ringgit (MYR/A\$)? (enter 4 decimal places number with no sign and symbol) Answer: The correct answer is: 4.4737