Finding the Fourth Proportional to 2,654,805, 3,981,868.56 and 857,501.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654,805 : 3,981,868.56 = 857,501.76 : x
2. Step 2: Convert to fraction form
   2,654,805/3,981,868.56 = 857,501.76/x
3. Step 3: Cross multiply
   2,654,805x = 3,981,868.56 × 857,501.76
4. Step 4: Simplify right side
   2,654,805x = 3,414,459,298,288.67
5. Step 5: Solve for x
   x = 3,414,459,298,288.67/2,654,805
6. Step 6: Final answer
   x = 1,286,143.16