Finding the Fourth Proportional to 2,011.84, 2,789.20 and 1,940.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.84 : 2,789.20 = 1,940.56 : x
2. Step 2: Convert to fraction form
   2,011.84/2,789.20 = 1,940.56/x
3. Step 3: Cross multiply
   2,011.84x = 2,789.20 × 1,940.56
4. Step 4: Simplify right side
   2,011.84x = 5,412,609.95
5. Step 5: Solve for x
   x = 5,412,609.95/2,011.84
6. Step 6: Final answer
   x = 2,690.38