Finding the Fourth Proportional to 2,310.15, 3,456.71 and 1,386.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.15 : 3,456.71 = 1,386.35 : x
2. Step 2: Convert to fraction form
   2,310.15/3,456.71 = 1,386.35/x
3. Step 3: Cross multiply
   2,310.15x = 3,456.71 × 1,386.35
4. Step 4: Simplify right side
   2,310.15x = 4,792,209.91
5. Step 5: Solve for x
   x = 4,792,209.91/2,310.15
6. Step 6: Final answer
   x = 2,074.42