Finding the Fourth Proportional to 1,031.79, 1,423.71 and 659.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.79 : 1,423.71 = 659.10 : x
2. Step 2: Convert to fraction form
   1,031.79/1,423.71 = 659.10/x
3. Step 3: Cross multiply
   1,031.79x = 1,423.71 × 659.10
4. Step 4: Simplify right side
   1,031.79x = 938,367.26
5. Step 5: Solve for x
   x = 938,367.26/1,031.79
6. Step 6: Final answer
   x = 909.46