Finding the Fourth Proportional to 1,446.25, 1,997.46 and 979.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.25 : 1,997.46 = 979.69 : x
2. Step 2: Convert to fraction form
   1,446.25/1,997.46 = 979.69/x
3. Step 3: Cross multiply
   1,446.25x = 1,997.46 × 979.69
4. Step 4: Simplify right side
   1,446.25x = 1,956,886.69
5. Step 5: Solve for x
   x = 1,956,886.69/1,446.25
6. Step 6: Final answer
   x = 1,353.08