Finding the Fourth Proportional to 2,105,086.56, 3,156,884.64 and 684,877.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,086.56 : 3,156,884.64 = 684,877.92 : x
2. Step 2: Convert to fraction form
   2,105,086.56/3,156,884.64 = 684,877.92/x
3. Step 3: Cross multiply
   2,105,086.56x = 3,156,884.64 × 684,877.92
4. Step 4: Simplify right side
   2,105,086.56x = 2,162,080,585,923.15
5. Step 5: Solve for x
   x = 2,162,080,585,923.15/2,105,086.56
6. Step 6: Final answer
   x = 1,027,074.43