Finding the Fourth Proportional to 2,760.78, 3,809.90 and 1,501.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.78 : 3,809.90 = 1,501.85 : x
2. Step 2: Convert to fraction form
   2,760.78/3,809.90 = 1,501.85/x
3. Step 3: Cross multiply
   2,760.78x = 3,809.90 × 1,501.85
4. Step 4: Simplify right side
   2,760.78x = 5,721,900.33
5. Step 5: Solve for x
   x = 5,721,900.33/2,760.78
6. Step 6: Final answer
   x = 2,072.57