Finding the Fourth Proportional to 1,570.76, 2,167.92 and 1,174.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.76 : 2,167.92 = 1,174.41 : x
2. Step 2: Convert to fraction form
   1,570.76/2,167.92 = 1,174.41/x
3. Step 3: Cross multiply
   1,570.76x = 2,167.92 × 1,174.41
4. Step 4: Simplify right side
   1,570.76x = 2,546,016.09
5. Step 5: Solve for x
   x = 2,546,016.09/1,570.76
6. Step 6: Final answer
   x = 1,620.89