Finding the Fourth Proportional to 1,105.07, 1,656.38 and 488.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.07 : 1,656.38 = 488.25 : x
2. Step 2: Convert to fraction form
   1,105.07/1,656.38 = 488.25/x
3. Step 3: Cross multiply
   1,105.07x = 1,656.38 × 488.25
4. Step 4: Simplify right side
   1,105.07x = 808,728.76
5. Step 5: Solve for x
   x = 808,728.76/1,105.07
6. Step 6: Final answer
   x = 731.84