Finding the Fourth Proportional to 1,031.50, 1,423.52 and 611.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.50 : 1,423.52 = 611.76 : x
2. Step 2: Convert to fraction form
   1,031.50/1,423.52 = 611.76/x
3. Step 3: Cross multiply
   1,031.50x = 1,423.52 × 611.76
4. Step 4: Simplify right side
   1,031.50x = 870,852.60
5. Step 5: Solve for x
   x = 870,852.60/1,031.50
6. Step 6: Final answer
   x = 844.26