Finding the Fourth Proportional to 2,140,085.16, 3,209,194.62 and 809,456.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,085.16 : 3,209,194.62 = 809,456.04 : x
2. Step 2: Convert to fraction form
   2,140,085.16/3,209,194.62 = 809,456.04/x
3. Step 3: Cross multiply
   2,140,085.16x = 3,209,194.62 × 809,456.04
4. Step 4: Simplify right side
   2,140,085.16x = 2,597,701,968,694.51
5. Step 5: Solve for x
   x = 2,597,701,968,694.51/2,140,085.16
6. Step 6: Final answer
   x = 1,213,831.12