Finding the Fourth Proportional to 2,309.10, 3,186.21 and 1,314.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.10 : 3,186.21 = 1,314.42 : x
2. Step 2: Convert to fraction form
   2,309.10/3,186.21 = 1,314.42/x
3. Step 3: Cross multiply
   2,309.10x = 3,186.21 × 1,314.42
4. Step 4: Simplify right side
   2,309.10x = 4,188,018.15
5. Step 5: Solve for x
   x = 4,188,018.15/2,309.10
6. Step 6: Final answer
   x = 1,813.70