Finding the Fourth Proportional to 779,839.57, 1,076,178.69 and 422,143.57

Step by Step Solution

1. Step 1: Write the proportion equation
   779,839.57 : 1,076,178.69 = 422,143.57 : x
2. Step 2: Convert to fraction form
   779,839.57/1,076,178.69 = 422,143.57/x
3. Step 3: Cross multiply
   779,839.57x = 1,076,178.69 × 422,143.57
4. Step 4: Simplify right side
   779,839.57x = 454,301,914,154.52
5. Step 5: Solve for x
   x = 454,301,914,154.52/779,839.57
6. Step 6: Final answer
   x = 582,558.17