Finding the Fourth Proportional to 1,133.52, 1,564.24 and 667.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.52 : 1,564.24 = 667.76 : x
2. Step 2: Convert to fraction form
   1,133.52/1,564.24 = 667.76/x
3. Step 3: Cross multiply
   1,133.52x = 1,564.24 × 667.76
4. Step 4: Simplify right side
   1,133.52x = 1,044,536.90
5. Step 5: Solve for x
   x = 1,044,536.90/1,133.52
6. Step 6: Final answer
   x = 921.50