Finding the Fourth Proportional to 1,357.83, 1,873.77 and 768.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.83 : 1,873.77 = 768.37 : x
2. Step 2: Convert to fraction form
   1,357.83/1,873.77 = 768.37/x
3. Step 3: Cross multiply
   1,357.83x = 1,873.77 × 768.37
4. Step 4: Simplify right side
   1,357.83x = 1,439,735.44
5. Step 5: Solve for x
   x = 1,439,735.44/1,357.83
6. Step 6: Final answer
   x = 1,060.32