Finding the Fourth Proportional to 1,133.56, 1,564.62 and 667.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.56 : 1,564.62 = 667.96 : x
2. Step 2: Convert to fraction form
   1,133.56/1,564.62 = 667.96/x
3. Step 3: Cross multiply
   1,133.56x = 1,564.62 × 667.96
4. Step 4: Simplify right side
   1,133.56x = 1,045,103.58
5. Step 5: Solve for x
   x = 1,045,103.58/1,133.56
6. Step 6: Final answer
   x = 921.97