Finding the Fourth Proportional to 2,116.39, 2,921.39 and 1,722.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.39 : 2,921.39 = 1,722.73 : x
2. Step 2: Convert to fraction form
   2,116.39/2,921.39 = 1,722.73/x
3. Step 3: Cross multiply
   2,116.39x = 2,921.39 × 1,722.73
4. Step 4: Simplify right side
   2,116.39x = 5,032,766.19
5. Step 5: Solve for x
   x = 5,032,766.19/2,116.39
6. Step 6: Final answer
   x = 2,378.00