Finding the Fourth Proportional to 2,309.67, 3,187.42 and 1,314.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.67 : 3,187.42 = 1,314.79 : x
2. Step 2: Convert to fraction form
   2,309.67/3,187.42 = 1,314.79/x
3. Step 3: Cross multiply
   2,309.67x = 3,187.42 × 1,314.79
4. Step 4: Simplify right side
   2,309.67x = 4,190,776.69
5. Step 5: Solve for x
   x = 4,190,776.69/2,309.67
6. Step 6: Final answer
   x = 1,814.45