Finding the Fourth Proportional to 1,088.32, 1,501.96 and 616.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.32 : 1,501.96 = 616.21 : x
2. Step 2: Convert to fraction form
   1,088.32/1,501.96 = 616.21/x
3. Step 3: Cross multiply
   1,088.32x = 1,501.96 × 616.21
4. Step 4: Simplify right side
   1,088.32x = 925,519.69
5. Step 5: Solve for x
   x = 925,519.69/1,088.32
6. Step 6: Final answer
   x = 850.41