Finding the Fourth Proportional to 1,031.98, 1,424.04 and 589.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.98 : 1,424.04 = 589.88 : x
2. Step 2: Convert to fraction form
   1,031.98/1,424.04 = 589.88/x
3. Step 3: Cross multiply
   1,031.98x = 1,424.04 × 589.88
4. Step 4: Simplify right side
   1,031.98x = 840,012.72
5. Step 5: Solve for x
   x = 840,012.72/1,031.98
6. Step 6: Final answer
   x = 813.98