Finding the Fourth Proportional to 1,105.59, 1,656.90 and 455.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.59 : 1,656.90 = 455.97 : x
2. Step 2: Convert to fraction form
   1,105.59/1,656.90 = 455.97/x
3. Step 3: Cross multiply
   1,105.59x = 1,656.90 × 455.97
4. Step 4: Simplify right side
   1,105.59x = 755,496.69
5. Step 5: Solve for x
   x = 755,496.69/1,105.59
6. Step 6: Final answer
   x = 683.34