Finding the Fourth Proportional to 1,144.96, 1,709.15 and 979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.96 : 1,709.15 = 979.72 : x
2. Step 2: Convert to fraction form
   1,144.96/1,709.15 = 979.72/x
3. Step 3: Cross multiply
   1,144.96x = 1,709.15 × 979.72
4. Step 4: Simplify right side
   1,144.96x = 1,674,488.44
5. Step 5: Solve for x
   x = 1,674,488.44/1,144.96
6. Step 6: Final answer
   x = 1,462.49