Finding the Fourth Proportional to 1,105.08, 1,524.30 and 663.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.08 : 1,524.30 = 663.12 : x
2. Step 2: Convert to fraction form
   1,105.08/1,524.30 = 663.12/x
3. Step 3: Cross multiply
   1,105.08x = 1,524.30 × 663.12
4. Step 4: Simplify right side
   1,105.08x = 1,010,793.82
5. Step 5: Solve for x
   x = 1,010,793.82/1,105.08
6. Step 6: Final answer
   x = 914.68