Finding the Fourth Proportional to 1,357.92, 1,873.98 and 768.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.92 : 1,873.98 = 768.42 : x
2. Step 2: Convert to fraction form
   1,357.92/1,873.98 = 768.42/x
3. Step 3: Cross multiply
   1,357.92x = 1,873.98 × 768.42
4. Step 4: Simplify right side
   1,357.92x = 1,440,003.71
5. Step 5: Solve for x
   x = 1,440,003.71/1,357.92
6. Step 6: Final answer
   x = 1,060.45