Finding the Fourth Proportional to 1,392.86, 1,922.06 and 763.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.86 : 1,922.06 = 763.27 : x
2. Step 2: Convert to fraction form
   1,392.86/1,922.06 = 763.27/x
3. Step 3: Cross multiply
   1,392.86x = 1,922.06 × 763.27
4. Step 4: Simplify right side
   1,392.86x = 1,467,046.92
5. Step 5: Solve for x
   x = 1,467,046.92/1,392.86
6. Step 6: Final answer
   x = 1,053.27