Finding the Fourth Proportional to 2,590.31, 3,885.57 and 1,031.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.31 : 3,885.57 = 1,031.06 : x
2. Step 2: Convert to fraction form
   2,590.31/3,885.57 = 1,031.06/x
3. Step 3: Cross multiply
   2,590.31x = 3,885.57 × 1,031.06
4. Step 4: Simplify right side
   2,590.31x = 4,006,265.52
5. Step 5: Solve for x
   x = 4,006,265.52/2,590.31
6. Step 6: Final answer
   x = 1,546.63