Finding the Fourth Proportional to 1,036.08, 1,429.31 and 616.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.08 : 1,429.31 = 616.20 : x
2. Step 2: Convert to fraction form
   1,036.08/1,429.31 = 616.20/x
3. Step 3: Cross multiply
   1,036.08x = 1,429.31 × 616.20
4. Step 4: Simplify right side
   1,036.08x = 880,740.82
5. Step 5: Solve for x
   x = 880,740.82/1,036.08
6. Step 6: Final answer
   x = 850.07