Finding the Fourth Proportional to 2,065,391.72, 3,099,300.16 and 867,221.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065,391.72 : 3,099,300.16 = 867,221.90 : x
2. Step 2: Convert to fraction form
   2,065,391.72/3,099,300.16 = 867,221.90/x
3. Step 3: Cross multiply
   2,065,391.72x = 3,099,300.16 × 867,221.90
4. Step 4: Simplify right side
   2,065,391.72x = 2,687,780,969,089.39
5. Step 5: Solve for x
   x = 2,687,780,969,089.39/2,065,391.72
6. Step 6: Final answer
   x = 1,301,341.99