Given the circuit below, what is the value of R1?

Because I cant figure out how to copy a photo over, I will describe the circuit to the best of my ability.

Parallel with 3 resistors.

R1 = ?

R2 = 5.1kOhms

R3 = 10kOhms

Vs = 24.0V

10mA

This is the furthest I have gotten so far (with minor variations through trial and error)

I attempted to solve for I2 & I3 through Ohms Law for their individual values (I2=V/R2) & (I3=V/R3) which resulted in 4.7ma & 2.4ma

Then, I subtracted these two values from It (10ma) which gave me 2.9 as I1

I used R=V/I to solve for its resistor value R=24V/2.9mA (0.0029A)

Which gave me 8,275.86 which was incorrect.

Please advise. Thank you for your time.