Finding the Fourth Proportional to 1,429.29, 2,142.81 and 659.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.29 : 2,142.81 = 659.25 : x
2. Step 2: Convert to fraction form
   1,429.29/2,142.81 = 659.25/x
3. Step 3: Cross multiply
   1,429.29x = 2,142.81 × 659.25
4. Step 4: Simplify right side
   1,429.29x = 1,412,647.49
5. Step 5: Solve for x
   x = 1,412,647.49/1,429.29
6. Step 6: Final answer
   x = 988.36