Finding the Fourth Proportional to 1,393.23, 1,922.49 and 803.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.23 : 1,922.49 = 803.73 : x
2. Step 2: Convert to fraction form
   1,393.23/1,922.49 = 803.73/x
3. Step 3: Cross multiply
   1,393.23x = 1,922.49 × 803.73
4. Step 4: Simplify right side
   1,393.23x = 1,545,162.89
5. Step 5: Solve for x
   x = 1,545,162.89/1,393.23
6. Step 6: Final answer
   x = 1,109.05