Finding the Fourth Proportional to 1,332,139.72, 1,998,865.68 and 622,064.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,332,139.72 : 1,998,865.68 = 622,064.56 : x
2. Step 2: Convert to fraction form
   1,332,139.72/1,998,865.68 = 622,064.56/x
3. Step 3: Cross multiply
   1,332,139.72x = 1,998,865.68 × 622,064.56
4. Step 4: Simplify right side
   1,332,139.72x = 1,243,423,499,728.30
5. Step 5: Solve for x
   x = 1,243,423,499,728.30/1,332,139.72
6. Step 6: Final answer
   x = 933,403.22