Finding the Fourth Proportional to 1,102.01, 1,520.61 and 659.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,102.01 : 1,520.61 = 659.81 : x
2. Step 2: Convert to fraction form
   1,102.01/1,520.61 = 659.81/x
3. Step 3: Cross multiply
   1,102.01x = 1,520.61 × 659.81
4. Step 4: Simplify right side
   1,102.01x = 1,003,315.01
5. Step 5: Solve for x
   x = 1,003,315.01/1,102.01
6. Step 6: Final answer
   x = 910.45