Finding the Fourth Proportional to 1,357.83, 1,873.89 and 768.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.83 : 1,873.89 = 768.47 : x
2. Step 2: Convert to fraction form
   1,357.83/1,873.89 = 768.47/x
3. Step 3: Cross multiply
   1,357.83x = 1,873.89 × 768.47
4. Step 4: Simplify right side
   1,357.83x = 1,440,018.88
5. Step 5: Solve for x
   x = 1,440,018.88/1,357.83
6. Step 6: Final answer
   x = 1,060.53