Finding the Fourth Proportional to 1,091.82, 1,633.68 and 659.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.82 : 1,633.68 = 659.28 : x
2. Step 2: Convert to fraction form
   1,091.82/1,633.68 = 659.28/x
3. Step 3: Cross multiply
   1,091.82x = 1,633.68 × 659.28
4. Step 4: Simplify right side
   1,091.82x = 1,077,052.55
5. Step 5: Solve for x
   x = 1,077,052.55/1,091.82
6. Step 6: Final answer
   x = 986.47