Finding the Fourth Proportional to 2,858.38, 3,948.56 and 2,708.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,858.38 : 3,948.56 = 2,708.76 : x
2. Step 2: Convert to fraction form
   2,858.38/3,948.56 = 2,708.76/x
3. Step 3: Cross multiply
   2,858.38x = 3,948.56 × 2,708.76
4. Step 4: Simplify right side
   2,858.38x = 10,695,701.39
5. Step 5: Solve for x
   x = 10,695,701.39/2,858.38
6. Step 6: Final answer
   x = 3,741.88