can someone help with this question with capacitors
freq= 141474 Hz 
Xc2=562
V3=V2=750 * 4 mA = 3 volt
V1= 5-3 = 2 volts 
find Ic2=3/562 = 5.3 mA
total current = 5.3 + 4 = 9.3 mA
Xc1 = 2/9.3 mA = 215 ohm 
then we use the formula C1=1/2*pifXc1= 0.0052 microfarad