Finding the Fourth Proportional to 1,109.52, 1,530.99 and 667.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.52 : 1,530.99 = 667.53 : x
2. Step 2: Convert to fraction form
   1,109.52/1,530.99 = 667.53/x
3. Step 3: Cross multiply
   1,109.52x = 1,530.99 × 667.53
4. Step 4: Simplify right side
   1,109.52x = 1,021,981.75
5. Step 5: Solve for x
   x = 1,021,981.75/1,109.52
6. Step 6: Final answer
   x = 921.10