Finding the Fourth Proportional to 1,373.80, 1,895.86 and 768.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.80 : 1,895.86 = 768.15 : x
2. Step 2: Convert to fraction form
   1,373.80/1,895.86 = 768.15/x
3. Step 3: Cross multiply
   1,373.80x = 1,895.86 × 768.15
4. Step 4: Simplify right side
   1,373.80x = 1,456,291.54
5. Step 5: Solve for x
   x = 1,456,291.54/1,373.80
6. Step 6: Final answer
   x = 1,060.05