Finding the Fourth Proportional to 1,100.98, 1,519.49 and 628.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.98 : 1,519.49 = 628.96 : x
2. Step 2: Convert to fraction form
   1,100.98/1,519.49 = 628.96/x
3. Step 3: Cross multiply
   1,100.98x = 1,519.49 × 628.96
4. Step 4: Simplify right side
   1,100.98x = 955,698.43
5. Step 5: Solve for x
   x = 955,698.43/1,100.98
6. Step 6: Final answer
   x = 868.04