Finding the Fourth Proportional to 3,859.37, 5,781.32 and 1,776.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.37 : 5,781.32 = 1,776.52 : x
2. Step 2: Convert to fraction form
   3,859.37/5,781.32 = 1,776.52/x
3. Step 3: Cross multiply
   3,859.37x = 5,781.32 × 1,776.52
4. Step 4: Simplify right side
   3,859.37x = 10,270,630.61
5. Step 5: Solve for x
   x = 10,270,630.61/3,859.37
6. Step 6: Final answer
   x = 2,661.22