Finding the Fourth Proportional to 2,758,981.72, 4,138,647.46 and 865,797.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758,981.72 : 4,138,647.46 = 865,797.88 : x
2. Step 2: Convert to fraction form
   2,758,981.72/4,138,647.46 = 865,797.88/x
3. Step 3: Cross multiply
   2,758,981.72x = 4,138,647.46 × 865,797.88
4. Step 4: Simplify right side
   2,758,981.72x = 3,583,232,196,935.39
5. Step 5: Solve for x
   x = 3,583,232,196,935.39/2,758,981.72
6. Step 6: Final answer
   x = 1,298,751.70