Finding the Fourth Proportional to 1,308.24, 1,961.42 and 659.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.24 : 1,961.42 = 659.43 : x
2. Step 2: Convert to fraction form
   1,308.24/1,961.42 = 659.43/x
3. Step 3: Cross multiply
   1,308.24x = 1,961.42 × 659.43
4. Step 4: Simplify right side
   1,308.24x = 1,293,415.89
5. Step 5: Solve for x
   x = 1,293,415.89/1,308.24
6. Step 6: Final answer
   x = 988.67