Finding the Fourth Proportional to 1,047.88, 1,446.20 and 605.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.88 : 1,446.20 = 605.78 : x
2. Step 2: Convert to fraction form
   1,047.88/1,446.20 = 605.78/x
3. Step 3: Cross multiply
   1,047.88x = 1,446.20 × 605.78
4. Step 4: Simplify right side
   1,047.88x = 876,076.01
5. Step 5: Solve for x
   x = 876,076.01/1,047.88
6. Step 6: Final answer
   x = 836.05