Finding the Fourth Proportional to 2,686.71, 4,029.59 and 712.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.71 : 4,029.59 = 712.36 : x
2. Step 2: Convert to fraction form
   2,686.71/4,029.59 = 712.36/x
3. Step 3: Cross multiply
   2,686.71x = 4,029.59 × 712.36
4. Step 4: Simplify right side
   2,686.71x = 2,870,510.44
5. Step 5: Solve for x
   x = 2,870,510.44/2,686.71
6. Step 6: Final answer
   x = 1,068.41