Finding the Fourth Proportional to 2,576,788.72, 3,864,395.76 and 1,228,240.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576,788.72 : 3,864,395.76 = 1,228,240.78 : x
2. Step 2: Convert to fraction form
   2,576,788.72/3,864,395.76 = 1,228,240.78/x
3. Step 3: Cross multiply
   2,576,788.72x = 3,864,395.76 × 1,228,240.78
4. Step 4: Simplify right side
   2,576,788.72x = 4,746,408,462,491.09
5. Step 5: Solve for x
   x = 4,746,408,462,491.09/2,576,788.72
6. Step 6: Final answer
   x = 1,841,985.89