Finding the Fourth Proportional to 2,076.75, 2,865.92 and 1,145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.75 : 2,865.92 = 1,145.25 : x
2. Step 2: Convert to fraction form
   2,076.75/2,865.92 = 1,145.25/x
3. Step 3: Cross multiply
   2,076.75x = 2,865.92 × 1,145.25
4. Step 4: Simplify right side
   2,076.75x = 3,282,189.15
5. Step 5: Solve for x
   x = 3,282,189.15/2,076.75
6. Step 6: Final answer
   x = 1,580.45