Finding the Fourth Proportional to 2,031.71, 3,046.34 and 861.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.71 : 3,046.34 = 861.53 : x
2. Step 2: Convert to fraction form
   2,031.71/3,046.34 = 861.53/x
3. Step 3: Cross multiply
   2,031.71x = 3,046.34 × 861.53
4. Step 4: Simplify right side
   2,031.71x = 2,624,493.76
5. Step 5: Solve for x
   x = 2,624,493.76/2,031.71
6. Step 6: Final answer
   x = 1,291.77