Finding the Fourth Proportional to 2,072,800.12, 3,109,200.18 and 809,742.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072,800.12 : 3,109,200.18 = 809,742.04 : x
2. Step 2: Convert to fraction form
   2,072,800.12/3,109,200.18 = 809,742.04/x
3. Step 3: Cross multiply
   2,072,800.12x = 3,109,200.18 × 809,742.04
4. Step 4: Simplify right side
   2,072,800.12x = 2,517,650,096,521.57
5. Step 5: Solve for x
   x = 2,517,650,096,521.57/2,072,800.12
6. Step 6: Final answer
   x = 1,214,613.06