Finding the Fourth Proportional to 2,865.42, 3,956.17 and 1,983.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.42 : 3,956.17 = 1,983.94 : x
2. Step 2: Convert to fraction form
   2,865.42/3,956.17 = 1,983.94/x
3. Step 3: Cross multiply
   2,865.42x = 3,956.17 × 1,983.94
4. Step 4: Simplify right side
   2,865.42x = 7,848,789.06
5. Step 5: Solve for x
   x = 7,848,789.06/2,865.42
6. Step 6: Final answer
   x = 2,739.14