Finding the Fourth Proportional to 3,685.44, 5,086.15 and 2,791.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.44 : 5,086.15 = 2,791.89 : x
2. Step 2: Convert to fraction form
   3,685.44/5,086.15 = 2,791.89/x
3. Step 3: Cross multiply
   3,685.44x = 5,086.15 × 2,791.89
4. Step 4: Simplify right side
   3,685.44x = 14,199,964.34
5. Step 5: Solve for x
   x = 14,199,964.34/3,685.44
6. Step 6: Final answer
   x = 3,852.99