Finding the Fourth Proportional to 1,072.48, 1,476.57 and 934.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.48 : 1,476.57 = 934.42 : x
2. Step 2: Convert to fraction form
   1,072.48/1,476.57 = 934.42/x
3. Step 3: Cross multiply
   1,072.48x = 1,476.57 × 934.42
4. Step 4: Simplify right side
   1,072.48x = 1,379,736.54
5. Step 5: Solve for x
   x = 1,379,736.54/1,072.48
6. Step 6: Final answer
   x = 1,286.49