Finding the Fourth Proportional to 1,667.14, 2,300.64 and 921.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.14 : 2,300.64 = 921.14 : x
2. Step 2: Convert to fraction form
   1,667.14/2,300.64 = 921.14/x
3. Step 3: Cross multiply
   1,667.14x = 2,300.64 × 921.14
4. Step 4: Simplify right side
   1,667.14x = 2,119,218.14
5. Step 5: Solve for x
   x = 2,119,218.14/1,667.14
6. Step 6: Final answer
   x = 1,271.17