Finding the Fourth Proportional to 1,109.01, 1,530.61 and 667.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.01 : 1,530.61 = 667.35 : x
2. Step 2: Convert to fraction form
   1,109.01/1,530.61 = 667.35/x
3. Step 3: Cross multiply
   1,109.01x = 1,530.61 × 667.35
4. Step 4: Simplify right side
   1,109.01x = 1,021,452.58
5. Step 5: Solve for x
   x = 1,021,452.58/1,109.01
6. Step 6: Final answer
   x = 921.05