Finding the Fourth Proportional to 1,109.74, 1,532.06 and 667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.74 : 1,532.06 = 667.75 : x
2. Step 2: Convert to fraction form
   1,109.74/1,532.06 = 667.75/x
3. Step 3: Cross multiply
   1,109.74x = 1,532.06 × 667.75
4. Step 4: Simplify right side
   1,109.74x = 1,023,029.73
5. Step 5: Solve for x
   x = 1,023,029.73/1,109.74
6. Step 6: Final answer
   x = 921.86