Finding the Fourth Proportional to 1,111.08, 1,665.24 and 624.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.08 : 1,665.24 = 624.48 : x
2. Step 2: Convert to fraction form
   1,111.08/1,665.24 = 624.48/x
3. Step 3: Cross multiply
   1,111.08x = 1,665.24 × 624.48
4. Step 4: Simplify right side
   1,111.08x = 1,039,909.08
5. Step 5: Solve for x
   x = 1,039,909.08/1,111.08
6. Step 6: Final answer
   x = 935.94