Finding the Fourth Proportional to 2,515.73, 3,470.52 and 1,570.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.73 : 3,470.52 = 1,570.91 : x
2. Step 2: Convert to fraction form
   2,515.73/3,470.52 = 1,570.91/x
3. Step 3: Cross multiply
   2,515.73x = 3,470.52 × 1,570.91
4. Step 4: Simplify right side
   2,515.73x = 5,451,857.22
5. Step 5: Solve for x
   x = 5,451,857.22/2,515.73
6. Step 6: Final answer
   x = 2,167.11