Finding the Fourth Proportional to 1,101.42, 1,519.69 and 659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.42 : 1,519.69 = 659.50 : x
2. Step 2: Convert to fraction form
   1,101.42/1,519.69 = 659.50/x
3. Step 3: Cross multiply
   1,101.42x = 1,519.69 × 659.50
4. Step 4: Simplify right side
   1,101.42x = 1,002,235.56
5. Step 5: Solve for x
   x = 1,002,235.56/1,101.42
6. Step 6: Final answer
   x = 909.95