Finding the Fourth Proportional to 1,101.82, 1,520.34 and 659.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.82 : 1,520.34 = 659.63 : x
2. Step 2: Convert to fraction form
   1,101.82/1,520.34 = 659.63/x
3. Step 3: Cross multiply
   1,101.82x = 1,520.34 × 659.63
4. Step 4: Simplify right side
   1,101.82x = 1,002,861.87
5. Step 5: Solve for x
   x = 1,002,861.87/1,101.82
6. Step 6: Final answer
   x = 910.19