Finding the Fourth Proportional to 3,860.76, 5,786.67 and 1,776.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.76 : 5,786.67 = 1,776.39 : x
2. Step 2: Convert to fraction form
   3,860.76/5,786.67 = 1,776.39/x
3. Step 3: Cross multiply
   3,860.76x = 5,786.67 × 1,776.39
4. Step 4: Simplify right side
   3,860.76x = 10,279,382.72
5. Step 5: Solve for x
   x = 10,279,382.72/3,860.76
6. Step 6: Final answer
   x = 2,662.53