Finding the Fourth Proportional to 1,088.37, 1,501.83 and 616.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.37 : 1,501.83 = 616.28 : x
2. Step 2: Convert to fraction form
   1,088.37/1,501.83 = 616.28/x
3. Step 3: Cross multiply
   1,088.37x = 1,501.83 × 616.28
4. Step 4: Simplify right side
   1,088.37x = 925,540.28
5. Step 5: Solve for x
   x = 925,540.28/1,088.37
6. Step 6: Final answer
   x = 850.39