Finding the Fourth Proportional to 3,788.06, 5,677.89 and 2,860.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.06 : 5,677.89 = 2,860.61 : x
2. Step 2: Convert to fraction form
   3,788.06/5,677.89 = 2,860.61/x
3. Step 3: Cross multiply
   3,788.06x = 5,677.89 × 2,860.61
4. Step 4: Simplify right side
   3,788.06x = 16,242,228.91
5. Step 5: Solve for x
   x = 16,242,228.91/3,788.06
6. Step 6: Final answer
   x = 4,287.74