Finding the Fourth Proportional to 1,091.52, 1,636.56 and 659.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.52 : 1,636.56 = 659.52 : x
2. Step 2: Convert to fraction form
   1,091.52/1,636.56 = 659.52/x
3. Step 3: Cross multiply
   1,091.52x = 1,636.56 × 659.52
4. Step 4: Simplify right side
   1,091.52x = 1,079,344.05
5. Step 5: Solve for x
   x = 1,079,344.05/1,091.52
6. Step 6: Final answer
   x = 988.84