Finding the Fourth Proportional to 1,353,530.01, 1,867,871.16 and 809,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353,530.01 : 1,867,871.16 = 809,688.72 : x
2. Step 2: Convert to fraction form
   1,353,530.01/1,867,871.16 = 809,688.72/x
3. Step 3: Cross multiply
   1,353,530.01x = 1,867,871.16 × 809,688.72
4. Step 4: Simplify right side
   1,353,530.01x = 1,512,394,208,665.32
5. Step 5: Solve for x
   x = 1,512,394,208,665.32/1,353,530.01
6. Step 6: Final answer
   x = 1,117,370.28