Finding the Fourth Proportional to 2,031.93, 3,047.42 and 861.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.93 : 3,047.42 = 861.29 : x
2. Step 2: Convert to fraction form
   2,031.93/3,047.42 = 861.29/x
3. Step 3: Cross multiply
   2,031.93x = 3,047.42 × 861.29
4. Step 4: Simplify right side
   2,031.93x = 2,624,692.83
5. Step 5: Solve for x
   x = 2,624,692.83/2,031.93
6. Step 6: Final answer
   x = 1,291.72