Finding the Fourth Proportional to 1,076.72, 1,610.72 and 894.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.72 : 1,610.72 = 894.48 : x
2. Step 2: Convert to fraction form
   1,076.72/1,610.72 = 894.48/x
3. Step 3: Cross multiply
   1,076.72x = 1,610.72 × 894.48
4. Step 4: Simplify right side
   1,076.72x = 1,440,756.83
5. Step 5: Solve for x
   x = 1,440,756.83/1,076.72
6. Step 6: Final answer
   x = 1,338.10