Finding the Fourth Proportional to 1,031.55, 1,423.31 and 589.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.55 : 1,423.31 = 589.43 : x
2. Step 2: Convert to fraction form
   1,031.55/1,423.31 = 589.43/x
3. Step 3: Cross multiply
   1,031.55x = 1,423.31 × 589.43
4. Step 4: Simplify right side
   1,031.55x = 838,931.55
5. Step 5: Solve for x
   x = 838,931.55/1,031.55
6. Step 6: Final answer
   x = 813.27