Finding the Fourth Proportional to 2,309.82, 3,180.15 and 1,869.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.82 : 3,180.15 = 1,869.18 : x
2. Step 2: Convert to fraction form
   2,309.82/3,180.15 = 1,869.18/x
3. Step 3: Cross multiply
   2,309.82x = 3,180.15 × 1,869.18
4. Step 4: Simplify right side
   2,309.82x = 5,944,272.78
5. Step 5: Solve for x
   x = 5,944,272.78/2,309.82
6. Step 6: Final answer
   x = 2,573.48