Finding the Fourth Proportional to 1,357.52, 1,873.28 and 768.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.52 : 1,873.28 = 768.12 : x
2. Step 2: Convert to fraction form
   1,357.52/1,873.28 = 768.12/x
3. Step 3: Cross multiply
   1,357.52x = 1,873.28 × 768.12
4. Step 4: Simplify right side
   1,357.52x = 1,438,903.83
5. Step 5: Solve for x
   x = 1,438,903.83/1,357.52
6. Step 6: Final answer
   x = 1,059.95