Finding the Fourth Proportional to 2,309.40, 3,187.16 and 1,314.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.40 : 3,187.16 = 1,314.72 : x
2. Step 2: Convert to fraction form
   2,309.40/3,187.16 = 1,314.72/x
3. Step 3: Cross multiply
   2,309.40x = 3,187.16 × 1,314.72
4. Step 4: Simplify right side
   2,309.40x = 4,190,223.00
5. Step 5: Solve for x
   x = 4,190,223.00/2,309.40
6. Step 6: Final answer
   x = 1,814.42