Finding the Fourth Proportional to 1,134.27, 1,564.79 and 668.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,134.27 : 1,564.79 = 668.25 : x
2. Step 2: Convert to fraction form
   1,134.27/1,564.79 = 668.25/x
3. Step 3: Cross multiply
   1,134.27x = 1,564.79 × 668.25
4. Step 4: Simplify right side
   1,134.27x = 1,045,667.58
5. Step 5: Solve for x
   x = 1,045,667.58/1,134.27
6. Step 6: Final answer
   x = 921.89