Finding the Fourth Proportional to 1,076.84, 1,487.94 and 845.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.84 : 1,487.94 = 845.72 : x
2. Step 2: Convert to fraction form
   1,076.84/1,487.94 = 845.72/x
3. Step 3: Cross multiply
   1,076.84x = 1,487.94 × 845.72
4. Step 4: Simplify right side
   1,076.84x = 1,258,380.62
5. Step 5: Solve for x
   x = 1,258,380.62/1,076.84
6. Step 6: Final answer
   x = 1,168.59