Finding the Fourth Proportional to 1,667.36, 2,301 and 921.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.36 : 2,301 = 921.34 : x
2. Step 2: Convert to fraction form
   1,667.36/2,301 = 921.34/x
3. Step 3: Cross multiply
   1,667.36x = 2,301 × 921.34
4. Step 4: Simplify right side
   1,667.36x = 2,120,003.34
5. Step 5: Solve for x
   x = 2,120,003.34/1,667.36
6. Step 6: Final answer
   x = 1,271.47