Finding the Fourth Proportional to 780,282, 1,076,789.16 and 422,586

Step by Step Solution

1. Step 1: Write the proportion equation
   780,282 : 1,076,789.16 = 422,586 : x
2. Step 2: Convert to fraction form
   780,282/1,076,789.16 = 422,586/x
3. Step 3: Cross multiply
   780,282x = 1,076,789.16 × 422,586
4. Step 4: Simplify right side
   780,282x = 455,036,023,967.76
5. Step 5: Solve for x
   x = 455,036,023,967.76/780,282
6. Step 6: Final answer
   x = 583,168.68