Finding the Fourth Proportional to 1,842.80, 2,759.31 and 1,519.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842.80 : 2,759.31 = 1,519.61 : x
2. Step 2: Convert to fraction form
   1,842.80/2,759.31 = 1,519.61/x
3. Step 3: Cross multiply
   1,842.80x = 2,759.31 × 1,519.61
4. Step 4: Simplify right side
   1,842.80x = 4,193,061.27
5. Step 5: Solve for x
   x = 4,193,061.27/1,842.80
6. Step 6: Final answer
   x = 2,275.38