Finding the Fourth Proportional to 1,818.10, 2,508.32 and 1,031.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.10 : 2,508.32 = 1,031.69 : x
2. Step 2: Convert to fraction form
   1,818.10/2,508.32 = 1,031.69/x
3. Step 3: Cross multiply
   1,818.10x = 2,508.32 × 1,031.69
4. Step 4: Simplify right side
   1,818.10x = 2,587,817.51
5. Step 5: Solve for x
   x = 2,587,817.51/1,818.10
6. Step 6: Final answer
   x = 1,423.37