Finding the Fourth Proportional to 2,756,768.86, 4,135,412.59 and 811,498.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,756,768.86 : 4,135,412.59 = 811,498.71 : x
2. Step 2: Convert to fraction form
   2,756,768.86/4,135,412.59 = 811,498.71/x
3. Step 3: Cross multiply
   2,756,768.86x = 4,135,412.59 × 811,498.71
4. Step 4: Simplify right side
   2,756,768.86x = 3,355,881,982,102.76
5. Step 5: Solve for x
   x = 3,355,881,982,102.76/2,756,768.86
6. Step 6: Final answer
   x = 1,217,324.39