Finding the Fourth Proportional to 1,353,142.99, 1,867,337.15 and 809,278.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353,142.99 : 1,867,337.15 = 809,278.69 : x
2. Step 2: Convert to fraction form
   1,353,142.99/1,867,337.15 = 809,278.69/x
3. Step 3: Cross multiply
   1,353,142.99x = 1,867,337.15 × 809,278.69
4. Step 4: Simplify right side
   1,353,142.99x = 1,511,196,162,540.33
5. Step 5: Solve for x
   x = 1,511,196,162,540.33/1,353,142.99
6. Step 6: Final answer
   x = 1,116,804.49