Finding the Fourth Proportional to 2,012.82, 2,776.28 and 1,945.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.82 : 2,776.28 = 1,945.08 : x
2. Step 2: Convert to fraction form
   2,012.82/2,776.28 = 1,945.08/x
3. Step 3: Cross multiply
   2,012.82x = 2,776.28 × 1,945.08
4. Step 4: Simplify right side
   2,012.82x = 5,400,087.92
5. Step 5: Solve for x
   x = 5,400,087.92/2,012.82
6. Step 6: Final answer
   x = 2,682.85