Finding the Fourth Proportional to 1,286,456.32, 1,775,418.72 and 713,681

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,456.32 : 1,775,418.72 = 713,681 : x
2. Step 2: Convert to fraction form
   1,286,456.32/1,775,418.72 = 713,681/x
3. Step 3: Cross multiply
   1,286,456.32x = 1,775,418.72 × 713,681
4. Step 4: Simplify right side
   1,286,456.32x = 1,267,082,607,508.32
5. Step 5: Solve for x
   x = 1,267,082,607,508.32/1,286,456.32
6. Step 6: Final answer
   x = 984,940.25