Finding the Fourth Proportional to 2,907,864.86, 4,362,270.72 and 858,732.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,907,864.86 : 4,362,270.72 = 858,732.68 : x
2. Step 2: Convert to fraction form
   2,907,864.86/4,362,270.72 = 858,732.68/x
3. Step 3: Cross multiply
   2,907,864.86x = 4,362,270.72 × 858,732.68
4. Step 4: Simplify right side
   2,907,864.86x = 3,746,024,426,271.13
5. Step 5: Solve for x
   x = 3,746,024,426,271.13/2,907,864.86
6. Step 6: Final answer
   x = 1,288,238.83