Finding the Fourth Proportional to 2,334.72, 3,219.28 and 2,280.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,334.72 : 3,219.28 = 2,280.96 : x
2. Step 2: Convert to fraction form
   2,334.72/3,219.28 = 2,280.96/x
3. Step 3: Cross multiply
   2,334.72x = 3,219.28 × 2,280.96
4. Step 4: Simplify right side
   2,334.72x = 7,343,048.91
5. Step 5: Solve for x
   x = 7,343,048.91/2,334.72
6. Step 6: Final answer
   x = 3,145.15