Finding the Fourth Proportional to 2,188,236.72, 3,282,780.52 and 840,300.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,236.72 : 3,282,780.52 = 840,300.26 : x
2. Step 2: Convert to fraction form
   2,188,236.72/3,282,780.52 = 840,300.26/x
3. Step 3: Cross multiply
   2,188,236.72x = 3,282,780.52 × 840,300.26
4. Step 4: Simplify right side
   2,188,236.72x = 2,758,521,324,478.94
5. Step 5: Solve for x
   x = 2,758,521,324,478.94/2,188,236.72
6. Step 6: Final answer
   x = 1,260,613.76