Finding the Fourth Proportional to 2,426.91, 3,350.31 and 1,720.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.91 : 3,350.31 = 1,720.23 : x
2. Step 2: Convert to fraction form
   2,426.91/3,350.31 = 1,720.23/x
3. Step 3: Cross multiply
   2,426.91x = 3,350.31 × 1,720.23
4. Step 4: Simplify right side
   2,426.91x = 5,763,303.77
5. Step 5: Solve for x
   x = 5,763,303.77/2,426.91
6. Step 6: Final answer
   x = 2,374.75