Finding the Fourth Proportional to 1,777.69, 2,452.22 and 1,247.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.69 : 2,452.22 = 1,247.37 : x
2. Step 2: Convert to fraction form
   1,777.69/2,452.22 = 1,247.37/x
3. Step 3: Cross multiply
   1,777.69x = 2,452.22 × 1,247.37
4. Step 4: Simplify right side
   1,777.69x = 3,058,821.92
5. Step 5: Solve for x
   x = 3,058,821.92/1,777.69
6. Step 6: Final answer
   x = 1,720.67