Finding the Fourth Proportional to 1,061,665.79, 1,593,183.48 and 387,690.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,665.79 : 1,593,183.48 = 387,690.71 : x
2. Step 2: Convert to fraction form
   1,061,665.79/1,593,183.48 = 387,690.71/x
3. Step 3: Cross multiply
   1,061,665.79x = 1,593,183.48 × 387,690.71
4. Step 4: Simplify right side
   1,061,665.79x = 617,662,427,282.47
5. Step 5: Solve for x
   x = 617,662,427,282.47/1,061,665.79
6. Step 6: Final answer
   x = 581,786.13