Finding the Fourth Proportional to 1,667.26, 2,300.81 and 921.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.26 : 2,300.81 = 921.27 : x
2. Step 2: Convert to fraction form
   1,667.26/2,300.81 = 921.27/x
3. Step 3: Cross multiply
   1,667.26x = 2,300.81 × 921.27
4. Step 4: Simplify right side
   1,667.26x = 2,119,667.23
5. Step 5: Solve for x
   x = 2,119,667.23/1,667.26
6. Step 6: Final answer
   x = 1,271.35