Finding the Fourth Proportional to 2,426.91, 3,347.37 and 1,680.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.91 : 3,347.37 = 1,680.90 : x
2. Step 2: Convert to fraction form
   2,426.91/3,347.37 = 1,680.90/x
3. Step 3: Cross multiply
   2,426.91x = 3,347.37 × 1,680.90
4. Step 4: Simplify right side
   2,426.91x = 5,626,594.23
5. Step 5: Solve for x
   x = 5,626,594.23/2,426.91
6. Step 6: Final answer
   x = 2,318.42