Finding the Fourth Proportional to 1,667.54, 2,301.17 and 921.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.54 : 2,301.17 = 921.48 : x
2. Step 2: Convert to fraction form
   1,667.54/2,301.17 = 921.48/x
3. Step 3: Cross multiply
   1,667.54x = 2,301.17 × 921.48
4. Step 4: Simplify right side
   1,667.54x = 2,120,477.52
5. Step 5: Solve for x
   x = 2,120,477.52/1,667.54
6. Step 6: Final answer
   x = 1,271.62