Finding the Fourth Proportional to 3,200.96, 4,802.16 and 2,315.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.96 : 4,802.16 = 2,315.72 : x
2. Step 2: Convert to fraction form
   3,200.96/4,802.16 = 2,315.72/x
3. Step 3: Cross multiply
   3,200.96x = 4,802.16 × 2,315.72
4. Step 4: Simplify right side
   3,200.96x = 11,120,457.96
5. Step 5: Solve for x
   x = 11,120,457.96/3,200.96
6. Step 6: Final answer
   x = 3,474.10