Finding the Fourth Proportional to 1,357.73, 1,873.69 and 768.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.73 : 1,873.69 = 768.26 : x
2. Step 2: Convert to fraction form
   1,357.73/1,873.69 = 768.26/x
3. Step 3: Cross multiply
   1,357.73x = 1,873.69 × 768.26
4. Step 4: Simplify right side
   1,357.73x = 1,439,469.79
5. Step 5: Solve for x
   x = 1,439,469.79/1,357.73
6. Step 6: Final answer
   x = 1,060.21