Finding the Fourth Proportional to 2,040.70, 2,815.78 and 1,936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.70 : 2,815.78 = 1,936.89 : x
2. Step 2: Convert to fraction form
   2,040.70/2,815.78 = 1,936.89/x
3. Step 3: Cross multiply
   2,040.70x = 2,815.78 × 1,936.89
4. Step 4: Simplify right side
   2,040.70x = 5,453,856.12
5. Step 5: Solve for x
   x = 5,453,856.12/2,040.70
6. Step 6: Final answer
   x = 2,672.54