Finding the Fourth Proportional to 2,518,287.12, 3,778,167.78 and 812,397.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518,287.12 : 3,778,167.78 = 812,397.96 : x
2. Step 2: Convert to fraction form
   2,518,287.12/3,778,167.78 = 812,397.96/x
3. Step 3: Cross multiply
   2,518,287.12x = 3,778,167.78 × 812,397.96
4. Step 4: Simplify right side
   2,518,287.12x = 3,069,375,797,009.73
5. Step 5: Solve for x
   x = 3,069,375,797,009.73/2,518,287.12
6. Step 6: Final answer
   x = 1,218,834.73