Finding the Fourth Proportional to 1,843.59, 2,540.64 and 1,318.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.59 : 2,540.64 = 1,318.71 : x
2. Step 2: Convert to fraction form
   1,843.59/2,540.64 = 1,318.71/x
3. Step 3: Cross multiply
   1,843.59x = 2,540.64 × 1,318.71
4. Step 4: Simplify right side
   1,843.59x = 3,350,367.37
5. Step 5: Solve for x
   x = 3,350,367.37/1,843.59
6. Step 6: Final answer
   x = 1,817.31