Finding the Fourth Proportional to 1,607.28, 2,410.16 and 1,120.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.28 : 2,410.16 = 1,120.56 : x
2. Step 2: Convert to fraction form
   1,607.28/2,410.16 = 1,120.56/x
3. Step 3: Cross multiply
   1,607.28x = 2,410.16 × 1,120.56
4. Step 4: Simplify right side
   1,607.28x = 2,700,728.89
5. Step 5: Solve for x
   x = 2,700,728.89/1,607.28
6. Step 6: Final answer
   x = 1,680.31