The order of electromagnetic waves in increasing frequency:
\[
\text{Radio waves}<\text{Microwaves}<\text{Infrared}<\text{Visible light}<\text{Ultraviolet}<\text{X-rays}<\text{Gamma rays}
\]
So, among the given options:
- Infrared comes before X-rays
- X-rays come before Gamma rays
Hence, correct increasing order is:
\[
\text{Infrared}<\text{X-rays}<\text{Gamma rays}
\]