Finding the Fourth Proportional to 2,076.75, 2,866.82 and 1,378.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.75 : 2,866.82 = 1,378.53 : x
2. Step 2: Convert to fraction form
   2,076.75/2,866.82 = 1,378.53/x
3. Step 3: Cross multiply
   2,076.75x = 2,866.82 × 1,378.53
4. Step 4: Simplify right side
   2,076.75x = 3,951,990.48
5. Step 5: Solve for x
   x = 3,951,990.48/2,076.75
6. Step 6: Final answer
   x = 1,902.97