Finding the Fourth Proportional to 1,002.93, 1,383.84 and 629.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.93 : 1,383.84 = 629.79 : x
2. Step 2: Convert to fraction form
   1,002.93/1,383.84 = 629.79/x
3. Step 3: Cross multiply
   1,002.93x = 1,383.84 × 629.79
4. Step 4: Simplify right side
   1,002.93x = 871,528.59
5. Step 5: Solve for x
   x = 871,528.59/1,002.93
6. Step 6: Final answer
   x = 868.98