Finding the Fourth Proportional to 1,002.02, 1,382.94 and 629.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.02 : 1,382.94 = 629.33 : x
2. Step 2: Convert to fraction form
   1,002.02/1,382.94 = 629.33/x
3. Step 3: Cross multiply
   1,002.02x = 1,382.94 × 629.33
4. Step 4: Simplify right side
   1,002.02x = 870,318.72
5. Step 5: Solve for x
   x = 870,318.72/1,002.02
6. Step 6: Final answer
   x = 868.57