Finding the Fourth Proportional to 1,765.68, 2,436.56 and 979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,765.68 : 2,436.56 = 979.72 : x
2. Step 2: Convert to fraction form
   1,765.68/2,436.56 = 979.72/x
3. Step 3: Cross multiply
   1,765.68x = 2,436.56 × 979.72
4. Step 4: Simplify right side
   1,765.68x = 2,387,146.56
5. Step 5: Solve for x
   x = 2,387,146.56/1,765.68
6. Step 6: Final answer
   x = 1,351.97