Finding the Fourth Proportional to 1,105.82, 1,659.63 and 528.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.82 : 1,659.63 = 528.69 : x
2. Step 2: Convert to fraction form
   1,105.82/1,659.63 = 528.69/x
3. Step 3: Cross multiply
   1,105.82x = 1,659.63 × 528.69
4. Step 4: Simplify right side
   1,105.82x = 877,429.78
5. Step 5: Solve for x
   x = 877,429.78/1,105.82
6. Step 6: Final answer
   x = 793.47