Finding the Fourth Proportional to 1,131.05, 1,560.85 and 659.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.05 : 1,560.85 = 659.27 : x
2. Step 2: Convert to fraction form
   1,131.05/1,560.85 = 659.27/x
3. Step 3: Cross multiply
   1,131.05x = 1,560.85 × 659.27
4. Step 4: Simplify right side
   1,131.05x = 1,029,018.63
5. Step 5: Solve for x
   x = 1,029,018.63/1,131.05
6. Step 6: Final answer
   x = 909.79