Finding the Fourth Proportional to 1,131.69, 1,695.22 and 668.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.69 : 1,695.22 = 668.07 : x
2. Step 2: Convert to fraction form
   1,131.69/1,695.22 = 668.07/x
3. Step 3: Cross multiply
   1,131.69x = 1,695.22 × 668.07
4. Step 4: Simplify right side
   1,131.69x = 1,132,513.81
5. Step 5: Solve for x
   x = 1,132,513.81/1,131.69
6. Step 6: Final answer
   x = 1,000.73