Finding the Fourth Proportional to 1,112.48, 1,666.58 and 624.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.48 : 1,666.58 = 624.05 : x
2. Step 2: Convert to fraction form
   1,112.48/1,666.58 = 624.05/x
3. Step 3: Cross multiply
   1,112.48x = 1,666.58 × 624.05
4. Step 4: Simplify right side
   1,112.48x = 1,040,031.86
5. Step 5: Solve for x
   x = 1,040,031.86/1,112.48
6. Step 6: Final answer
   x = 934.87