Finding the Fourth Proportional to 1,667.25, 2,300.73 and 921.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.25 : 2,300.73 = 921.25 : x
2. Step 2: Convert to fraction form
   1,667.25/2,300.73 = 921.25/x
3. Step 3: Cross multiply
   1,667.25x = 2,300.73 × 921.25
4. Step 4: Simplify right side
   1,667.25x = 2,119,536.01
5. Step 5: Solve for x
   x = 2,119,536.01/1,667.25
6. Step 6: Final answer
   x = 1,271.28