Finding the Fourth Proportional to 2,856.38, 3,942.45 and 1,677.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.38 : 3,942.45 = 1,677.83 : x
2. Step 2: Convert to fraction form
   2,856.38/3,942.45 = 1,677.83/x
3. Step 3: Cross multiply
   2,856.38x = 3,942.45 × 1,677.83
4. Step 4: Simplify right side
   2,856.38x = 6,614,741.17
5. Step 5: Solve for x
   x = 6,614,741.17/2,856.38
6. Step 6: Final answer
   x = 2,315.78