Finding the Fourth Proportional to 1,193,105.86, 1,789,399.59 and 394,198.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,193,105.86 : 1,789,399.59 = 394,198.18 : x
2. Step 2: Convert to fraction form
   1,193,105.86/1,789,399.59 = 394,198.18/x
3. Step 3: Cross multiply
   1,193,105.86x = 1,789,399.59 × 394,198.18
4. Step 4: Simplify right side
   1,193,105.86x = 705,378,061,670.75
5. Step 5: Solve for x
   x = 705,378,061,670.75/1,193,105.86
6. Step 6: Final answer
   x = 591,211.63