Finding the Fourth Proportional to 1,035.65, 1,429.52 and 616.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.65 : 1,429.52 = 616.31 : x
2. Step 2: Convert to fraction form
   1,035.65/1,429.52 = 616.31/x
3. Step 3: Cross multiply
   1,035.65x = 1,429.52 × 616.31
4. Step 4: Simplify right side
   1,035.65x = 881,022.60
5. Step 5: Solve for x
   x = 881,022.60/1,035.65
6. Step 6: Final answer
   x = 850.69