Finding the Fourth Proportional to 2,309.41, 3,186.72 and 1,314.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.41 : 3,186.72 = 1,314.40 : x
2. Step 2: Convert to fraction form
   2,309.41/3,186.72 = 1,314.40/x
3. Step 3: Cross multiply
   2,309.41x = 3,186.72 × 1,314.40
4. Step 4: Simplify right side
   2,309.41x = 4,188,628.04
5. Step 5: Solve for x
   x = 4,188,628.04/2,309.41
6. Step 6: Final answer
   x = 1,813.72