Finding the Fourth Proportional to 1,088.21, 1,501.73 and 616.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.21 : 1,501.73 = 616.17 : x
2. Step 2: Convert to fraction form
   1,088.21/1,501.73 = 616.17/x
3. Step 3: Cross multiply
   1,088.21x = 1,501.73 × 616.17
4. Step 4: Simplify right side
   1,088.21x = 925,317.89
5. Step 5: Solve for x
   x = 925,317.89/1,088.21
6. Step 6: Final answer
   x = 850.32