Finding the Fourth Proportional to 1,357.50, 1,873.38 and 768.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.50 : 1,873.38 = 768.04 : x
2. Step 2: Convert to fraction form
   1,357.50/1,873.38 = 768.04/x
3. Step 3: Cross multiply
   1,357.50x = 1,873.38 × 768.04
4. Step 4: Simplify right side
   1,357.50x = 1,438,821.41
5. Step 5: Solve for x
   x = 1,438,821.41/1,357.50
6. Step 6: Final answer
   x = 1,059.91