Finding the Fourth Proportional to 2,689.22, 3,709.56 and 1,570.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.22 : 3,709.56 = 1,570.01 : x
2. Step 2: Convert to fraction form
   2,689.22/3,709.56 = 1,570.01/x
3. Step 3: Cross multiply
   2,689.22x = 3,709.56 × 1,570.01
4. Step 4: Simplify right side
   2,689.22x = 5,824,046.30
5. Step 5: Solve for x
   x = 5,824,046.30/2,689.22
6. Step 6: Final answer
   x = 2,165.70