Finding the Fourth Proportional to 780,156, 1,076,615.28 and 422,460

Step by Step Solution

1. Step 1: Write the proportion equation
   780,156 : 1,076,615.28 = 422,460 : x
2. Step 2: Convert to fraction form
   780,156/1,076,615.28 = 422,460/x
3. Step 3: Cross multiply
   780,156x = 1,076,615.28 × 422,460
4. Step 4: Simplify right side
   780,156x = 454,826,891,188.80
5. Step 5: Solve for x
   x = 454,826,891,188.80/780,156
6. Step 6: Final answer
   x = 582,994.80