Finding the Fourth Proportional to 2,309.46, 3,186.32 and 1,314.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.46 : 3,186.32 = 1,314.78 : x
2. Step 2: Convert to fraction form
   2,309.46/3,186.32 = 1,314.78/x
3. Step 3: Cross multiply
   2,309.46x = 3,186.32 × 1,314.78
4. Step 4: Simplify right side
   2,309.46x = 4,189,303.24
5. Step 5: Solve for x
   x = 4,189,303.24/2,309.46
6. Step 6: Final answer
   x = 1,813.98