Finding the Fourth Proportional to 1,771.89, 2,658.31 and 1,578.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,771.89 : 2,658.31 = 1,578.22 : x
2. Step 2: Convert to fraction form
   1,771.89/2,658.31 = 1,578.22/x
3. Step 3: Cross multiply
   1,771.89x = 2,658.31 × 1,578.22
4. Step 4: Simplify right side
   1,771.89x = 4,195,398.01
5. Step 5: Solve for x
   x = 4,195,398.01/1,771.89
6. Step 6: Final answer
   x = 2,367.75