Finding the Fourth Proportional to 2,969.34, 4,067.94 and 2,858.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,969.34 : 4,067.94 = 2,858.55 : x
2. Step 2: Convert to fraction form
   2,969.34/4,067.94 = 2,858.55/x
3. Step 3: Cross multiply
   2,969.34x = 4,067.94 × 2,858.55
4. Step 4: Simplify right side
   2,969.34x = 11,628,409.89
5. Step 5: Solve for x
   x = 11,628,409.89/2,969.34
6. Step 6: Final answer
   x = 3,916.16