Finding the Fourth Proportional to 1,001.98, 1,382.84 and 629.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,001.98 : 1,382.84 = 629.25 : x
2. Step 2: Convert to fraction form
   1,001.98/1,382.84 = 629.25/x
3. Step 3: Cross multiply
   1,001.98x = 1,382.84 × 629.25
4. Step 4: Simplify right side
   1,001.98x = 870,152.07
5. Step 5: Solve for x
   x = 870,152.07/1,001.98
6. Step 6: Final answer
   x = 868.43