Finding the Fourth Proportional to 1,456.86, 2,180.70 and 936.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.86 : 2,180.70 = 936.17 : x
2. Step 2: Convert to fraction form
   1,456.86/2,180.70 = 936.17/x
3. Step 3: Cross multiply
   1,456.86x = 2,180.70 × 936.17
4. Step 4: Simplify right side
   1,456.86x = 2,041,495.02
5. Step 5: Solve for x
   x = 2,041,495.02/1,456.86
6. Step 6: Final answer
   x = 1,401.30