Finding the Fourth Proportional to 2,688.88, 3,710.95 and 1,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.88 : 3,710.95 = 1,570.10 : x
2. Step 2: Convert to fraction form
   2,688.88/3,710.95 = 1,570.10/x
3. Step 3: Cross multiply
   2,688.88x = 3,710.95 × 1,570.10
4. Step 4: Simplify right side
   2,688.88x = 5,826,544.04
5. Step 5: Solve for x
   x = 5,826,544.04/2,688.88
6. Step 6: Final answer
   x = 2,166.90