Finding the Fourth Proportional to 1,397.74, 1,928.98 and 768.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.74 : 1,928.98 = 768.27 : x
2. Step 2: Convert to fraction form
   1,397.74/1,928.98 = 768.27/x
3. Step 3: Cross multiply
   1,397.74x = 1,928.98 × 768.27
4. Step 4: Simplify right side
   1,397.74x = 1,481,977.46
5. Step 5: Solve for x
   x = 1,481,977.46/1,397.74
6. Step 6: Final answer
   x = 1,060.27