Finding the Fourth Proportional to 1,103.28, 1,655.52 and 454.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.28 : 1,655.52 = 454.56 : x
2. Step 2: Convert to fraction form
   1,103.28/1,655.52 = 454.56/x
3. Step 3: Cross multiply
   1,103.28x = 1,655.52 × 454.56
4. Step 4: Simplify right side
   1,103.28x = 752,533.17
5. Step 5: Solve for x
   x = 752,533.17/1,103.28
6. Step 6: Final answer
   x = 682.09