Finding the Fourth Proportional to 1,610.47, 2,415.89 and 570.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.47 : 2,415.89 = 570.25 : x
2. Step 2: Convert to fraction form
   1,610.47/2,415.89 = 570.25/x
3. Step 3: Cross multiply
   1,610.47x = 2,415.89 × 570.25
4. Step 4: Simplify right side
   1,610.47x = 1,377,661.27
5. Step 5: Solve for x
   x = 1,377,661.27/1,610.47
6. Step 6: Final answer
   x = 855.44