Finding the Fourth Proportional to 1,456.18, 2,180.71 and 934.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.18 : 2,180.71 = 934.54 : x
2. Step 2: Convert to fraction form
   1,456.18/2,180.71 = 934.54/x
3. Step 3: Cross multiply
   1,456.18x = 2,180.71 × 934.54
4. Step 4: Simplify right side
   1,456.18x = 2,037,960.72
5. Step 5: Solve for x
   x = 2,037,960.72/1,456.18
6. Step 6: Final answer
   x = 1,399.53