Finding the Fourth Proportional to 1,101.59, 1,519.75 and 659.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.59 : 1,519.75 = 659.51 : x
2. Step 2: Convert to fraction form
   1,101.59/1,519.75 = 659.51/x
3. Step 3: Cross multiply
   1,101.59x = 1,519.75 × 659.51
4. Step 4: Simplify right side
   1,101.59x = 1,002,290.32
5. Step 5: Solve for x
   x = 1,002,290.32/1,101.59
6. Step 6: Final answer
   x = 909.86