Finding the Fourth Proportional to 1,343.39, 2,014.18 and 685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.39 : 2,014.18 = 685.50 : x
2. Step 2: Convert to fraction form
   1,343.39/2,014.18 = 685.50/x
3. Step 3: Cross multiply
   1,343.39x = 2,014.18 × 685.50
4. Step 4: Simplify right side
   1,343.39x = 1,380,720.39
5. Step 5: Solve for x
   x = 1,380,720.39/1,343.39
6. Step 6: Final answer
   x = 1,027.79