Finding the Fourth Proportional to 1,031.61, 1,423.57 and 589.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.61 : 1,423.57 = 589.35 : x
2. Step 2: Convert to fraction form
   1,031.61/1,423.57 = 589.35/x
3. Step 3: Cross multiply
   1,031.61x = 1,423.57 × 589.35
4. Step 4: Simplify right side
   1,031.61x = 838,980.98
5. Step 5: Solve for x
   x = 838,980.98/1,031.61
6. Step 6: Final answer
   x = 813.27