Finding the Fourth Proportional to 2,760.61, 3,809.29 and 1,866.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.61 : 3,809.29 = 1,866.29 : x
2. Step 2: Convert to fraction form
   2,760.61/3,809.29 = 1,866.29/x
3. Step 3: Cross multiply
   2,760.61x = 3,809.29 × 1,866.29
4. Step 4: Simplify right side
   2,760.61x = 7,109,243.67
5. Step 5: Solve for x
   x = 7,109,243.67/2,760.61
6. Step 6: Final answer
   x = 2,575.25