Finding the Fourth Proportional to 1,105.38, 1,524.79 and 663.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.38 : 1,524.79 = 663.03 : x
2. Step 2: Convert to fraction form
   1,105.38/1,524.79 = 663.03/x
3. Step 3: Cross multiply
   1,105.38x = 1,524.79 × 663.03
4. Step 4: Simplify right side
   1,105.38x = 1,010,980.73
5. Step 5: Solve for x
   x = 1,010,980.73/1,105.38
6. Step 6: Final answer
   x = 914.60