Finding the Fourth Proportional to 1,113.38, 1,536.50 and 616.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.38 : 1,536.50 = 616.02 : x
2. Step 2: Convert to fraction form
   1,113.38/1,536.50 = 616.02/x
3. Step 3: Cross multiply
   1,113.38x = 1,536.50 × 616.02
4. Step 4: Simplify right side
   1,113.38x = 946,514.73
5. Step 5: Solve for x
   x = 946,514.73/1,113.38
6. Step 6: Final answer
   x = 850.13