Finding the Fourth Proportional to 1,392.94, 1,922.22 and 763.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.94 : 1,922.22 = 763.49 : x
2. Step 2: Convert to fraction form
   1,392.94/1,922.22 = 763.49/x
3. Step 3: Cross multiply
   1,392.94x = 1,922.22 × 763.49
4. Step 4: Simplify right side
   1,392.94x = 1,467,600.55
5. Step 5: Solve for x
   x = 1,467,600.55/1,392.94
6. Step 6: Final answer
   x = 1,053.60