Finding the Fourth Proportional to 1,036.71, 1,552.86 and 646.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.71 : 1,552.86 = 646.83 : x
2. Step 2: Convert to fraction form
   1,036.71/1,552.86 = 646.83/x
3. Step 3: Cross multiply
   1,036.71x = 1,552.86 × 646.83
4. Step 4: Simplify right side
   1,036.71x = 1,004,436.43
5. Step 5: Solve for x
   x = 1,004,436.43/1,036.71
6. Step 6: Final answer
   x = 968.87