Finding the Fourth Proportional to 1,101.69, 1,520.33 and 659.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.69 : 1,520.33 = 659.59 : x
2. Step 2: Convert to fraction form
   1,101.69/1,520.33 = 659.59/x
3. Step 3: Cross multiply
   1,101.69x = 1,520.33 × 659.59
4. Step 4: Simplify right side
   1,101.69x = 1,002,787.37
5. Step 5: Solve for x
   x = 1,002,787.37/1,101.69
6. Step 6: Final answer
   x = 910.23