Finding the Fourth Proportional to 1,031.69, 1,423.63 and 589.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.69 : 1,423.63 = 589.58 : x
2. Step 2: Convert to fraction form
   1,031.69/1,423.63 = 589.58/x
3. Step 3: Cross multiply
   1,031.69x = 1,423.63 × 589.58
4. Step 4: Simplify right side
   1,031.69x = 839,343.78
5. Step 5: Solve for x
   x = 839,343.78/1,031.69
6. Step 6: Final answer
   x = 813.56