Finding the Fourth Proportional to 1,366.34, 1,885.05 and 768.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.34 : 1,885.05 = 768.69 : x
2. Step 2: Convert to fraction form
   1,366.34/1,885.05 = 768.69/x
3. Step 3: Cross multiply
   1,366.34x = 1,885.05 × 768.69
4. Step 4: Simplify right side
   1,366.34x = 1,449,019.08
5. Step 5: Solve for x
   x = 1,449,019.08/1,366.34
6. Step 6: Final answer
   x = 1,060.52