Finding the Fourth Proportional to 3,665.41, 5,057.08 and 2,071.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.41 : 5,057.08 = 2,071.87 : x
2. Step 2: Convert to fraction form
   3,665.41/5,057.08 = 2,071.87/x
3. Step 3: Cross multiply
   3,665.41x = 5,057.08 × 2,071.87
4. Step 4: Simplify right side
   3,665.41x = 10,477,594.52
5. Step 5: Solve for x
   x = 10,477,594.52/3,665.41
6. Step 6: Final answer
   x = 2,858.51