Finding the Fourth Proportional to 1,392.91, 1,922.23 and 763.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.91 : 1,922.23 = 763.42 : x
2. Step 2: Convert to fraction form
   1,392.91/1,922.23 = 763.42/x
3. Step 3: Cross multiply
   1,392.91x = 1,922.23 × 763.42
4. Step 4: Simplify right side
   1,392.91x = 1,467,468.83
5. Step 5: Solve for x
   x = 1,467,468.83/1,392.91
6. Step 6: Final answer
   x = 1,053.53