Finding the Fourth Proportional to 1,100.73, 1,518.63 and 628.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.73 : 1,518.63 = 628.29 : x
2. Step 2: Convert to fraction form
   1,100.73/1,518.63 = 628.29/x
3. Step 3: Cross multiply
   1,100.73x = 1,518.63 × 628.29
4. Step 4: Simplify right side
   1,100.73x = 954,132.45
5. Step 5: Solve for x
   x = 954,132.45/1,100.73
6. Step 6: Final answer
   x = 866.82