Finding the Fourth Proportional to 1,105.82, 1,524.01 and 918.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.82 : 1,524.01 = 918.30 : x
2. Step 2: Convert to fraction form
   1,105.82/1,524.01 = 918.30/x
3. Step 3: Cross multiply
   1,105.82x = 1,524.01 × 918.30
4. Step 4: Simplify right side
   1,105.82x = 1,399,498.38
5. Step 5: Solve for x
   x = 1,399,498.38/1,105.82
6. Step 6: Final answer
   x = 1,265.58