Finding the Fourth Proportional to 1,817.91, 2,508.57 and 1,031.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.91 : 2,508.57 = 1,031.94 : x
2. Step 2: Convert to fraction form
   1,817.91/2,508.57 = 1,031.94/x
3. Step 3: Cross multiply
   1,817.91x = 2,508.57 × 1,031.94
4. Step 4: Simplify right side
   1,817.91x = 2,588,693.73
5. Step 5: Solve for x
   x = 2,588,693.73/1,817.91
6. Step 6: Final answer
   x = 1,423.99