Finding the Fourth Proportional to 2,260.72, 3,120.96 and 1,560.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.72 : 3,120.96 = 1,560.88 : x
2. Step 2: Convert to fraction form
   2,260.72/3,120.96 = 1,560.88/x
3. Step 3: Cross multiply
   2,260.72x = 3,120.96 × 1,560.88
4. Step 4: Simplify right side
   2,260.72x = 4,871,444.04
5. Step 5: Solve for x
   x = 4,871,444.04/2,260.72
6. Step 6: Final answer
   x = 2,154.82