Finding the Fourth Proportional to 3,951.74, 5,931.20 and 2,104.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,951.74 : 5,931.20 = 2,104.43 : x
2. Step 2: Convert to fraction form
   3,951.74/5,931.20 = 2,104.43/x
3. Step 3: Cross multiply
   3,951.74x = 5,931.20 × 2,104.43
4. Step 4: Simplify right side
   3,951.74x = 12,481,770.82
5. Step 5: Solve for x
   x = 12,481,770.82/3,951.74
6. Step 6: Final answer
   x = 3,158.55