Finding the Fourth Proportional to 2,786.31, 4,179.82 and 1,031.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.31 : 4,179.82 = 1,031.02 : x
2. Step 2: Convert to fraction form
   2,786.31/4,179.82 = 1,031.02/x
3. Step 3: Cross multiply
   2,786.31x = 4,179.82 × 1,031.02
4. Step 4: Simplify right side
   2,786.31x = 4,309,475.44
5. Step 5: Solve for x
   x = 4,309,475.44/2,786.31
6. Step 6: Final answer
   x = 1,546.66