Finding the Fourth Proportional to 1,366.35, 1,885.38 and 768.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.35 : 1,885.38 = 768.76 : x
2. Step 2: Convert to fraction form
   1,366.35/1,885.38 = 768.76/x
3. Step 3: Cross multiply
   1,366.35x = 1,885.38 × 768.76
4. Step 4: Simplify right side
   1,366.35x = 1,449,404.73
5. Step 5: Solve for x
   x = 1,449,404.73/1,366.35
6. Step 6: Final answer
   x = 1,060.79