Finding the Fourth Proportional to 1,245,414, 1,718,673.24 and 708,870

Step by Step Solution

1. Step 1: Write the proportion equation
   1,245,414 : 1,718,673.24 = 708,870 : x
2. Step 2: Convert to fraction form
   1,245,414/1,718,673.24 = 708,870/x
3. Step 3: Cross multiply
   1,245,414x = 1,718,673.24 × 708,870
4. Step 4: Simplify right side
   1,245,414x = 1,218,315,899,638.80
5. Step 5: Solve for x
   x = 1,218,315,899,638.80/1,245,414
6. Step 6: Final answer
   x = 978,241.69