Finding the Fourth Proportional to 2,768.79, 3,820.89 and 1,509.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,768.79 : 3,820.89 = 1,509.91 : x
2. Step 2: Convert to fraction form
   2,768.79/3,820.89 = 1,509.91/x
3. Step 3: Cross multiply
   2,768.79x = 3,820.89 × 1,509.91
4. Step 4: Simplify right side
   2,768.79x = 5,769,196.13
5. Step 5: Solve for x
   x = 5,769,196.13/2,768.79
6. Step 6: Final answer
   x = 2,083.65