Finding the Fourth Proportional to 2,644,923.72, 3,967,759.20 and 847,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644,923.72 : 3,967,759.20 = 847,386.72 : x
2. Step 2: Convert to fraction form
   2,644,923.72/3,967,759.20 = 847,386.72/x
3. Step 3: Cross multiply
   2,644,923.72x = 3,967,759.20 × 847,386.72
4. Step 4: Simplify right side
   2,644,923.72x = 3,362,226,454,237.82
5. Step 5: Solve for x
   x = 3,362,226,454,237.82/2,644,923.72
6. Step 6: Final answer
   x = 1,271,199.78