Finding the Fourth Proportional to 3,155.83, 4,709.42 and 2,771.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,155.83 : 4,709.42 = 2,771.89 : x
2. Step 2: Convert to fraction form
   3,155.83/4,709.42 = 2,771.89/x
3. Step 3: Cross multiply
   3,155.83x = 4,709.42 × 2,771.89
4. Step 4: Simplify right side
   3,155.83x = 13,053,994.56
5. Step 5: Solve for x
   x = 13,053,994.56/3,155.83
6. Step 6: Final answer
   x = 4,136.47