Finding the Fourth Proportional to 1,109.24, 1,662.60 and 676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.24 : 1,662.60 = 676.72 : x
2. Step 2: Convert to fraction form
   1,109.24/1,662.60 = 676.72/x
3. Step 3: Cross multiply
   1,109.24x = 1,662.60 × 676.72
4. Step 4: Simplify right side
   1,109.24x = 1,125,114.67
5. Step 5: Solve for x
   x = 1,125,114.67/1,109.24
6. Step 6: Final answer
   x = 1,014.31