Finding the Fourth Proportional to 2,688.80, 3,710.58 and 1,570.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.80 : 3,710.58 = 1,570.52 : x
2. Step 2: Convert to fraction form
   2,688.80/3,710.58 = 1,570.52/x
3. Step 3: Cross multiply
   2,688.80x = 3,710.58 × 1,570.52
4. Step 4: Simplify right side
   2,688.80x = 5,827,540.10
5. Step 5: Solve for x
   x = 5,827,540.10/2,688.80
6. Step 6: Final answer
   x = 2,167.34