Finding the Fourth Proportional to 3,100.72, 4,281.76 and 2,313.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.72 : 4,281.76 = 2,313.40 : x
2. Step 2: Convert to fraction form
   3,100.72/4,281.76 = 2,313.40/x
3. Step 3: Cross multiply
   3,100.72x = 4,281.76 × 2,313.40
4. Step 4: Simplify right side
   3,100.72x = 9,905,423.58
5. Step 5: Solve for x
   x = 9,905,423.58/3,100.72
6. Step 6: Final answer
   x = 3,194.56