Finding the Fourth Proportional to 1,393.37, 1,922.82 and 763.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.37 : 1,922.82 = 763.88 : x
2. Step 2: Convert to fraction form
   1,393.37/1,922.82 = 763.88/x
3. Step 3: Cross multiply
   1,393.37x = 1,922.82 × 763.88
4. Step 4: Simplify right side
   1,393.37x = 1,468,792.22
5. Step 5: Solve for x
   x = 1,468,792.22/1,393.37
6. Step 6: Final answer
   x = 1,054.13