Finding the Fourth Proportional to 2,730,978.74, 4,096,103.54 and 811,853.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730,978.74 : 4,096,103.54 = 811,853.96 : x
2. Step 2: Convert to fraction form
   2,730,978.74/4,096,103.54 = 811,853.96/x
3. Step 3: Cross multiply
   2,730,978.74x = 4,096,103.54 × 811,853.96
4. Step 4: Simplify right side
   2,730,978.74x = 3,325,437,879,519.02
5. Step 5: Solve for x
   x = 3,325,437,879,519.02/2,730,978.74
6. Step 6: Final answer
   x = 1,217,672.56