Finding the Fourth Proportional to 2,874.96, 4,308.45 and 1,311.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.96 : 4,308.45 = 1,311.14 : x
2. Step 2: Convert to fraction form
   2,874.96/4,308.45 = 1,311.14/x
3. Step 3: Cross multiply
   2,874.96x = 4,308.45 × 1,311.14
4. Step 4: Simplify right side
   2,874.96x = 5,648,959.59
5. Step 5: Solve for x
   x = 5,648,959.59/2,874.96
6. Step 6: Final answer
   x = 1,964.88