Finding the Fourth Proportional to 1,031.33, 1,423.49 and 589.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.33 : 1,423.49 = 589.49 : x
2. Step 2: Convert to fraction form
   1,031.33/1,423.49 = 589.49/x
3. Step 3: Cross multiply
   1,031.33x = 1,423.49 × 589.49
4. Step 4: Simplify right side
   1,031.33x = 839,131.22
5. Step 5: Solve for x
   x = 839,131.22/1,031.33
6. Step 6: Final answer
   x = 813.64