Finding the Fourth Proportional to 1,722.79, 2,378.79 and 1,323.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.79 : 2,378.79 = 1,323.82 : x
2. Step 2: Convert to fraction form
   1,722.79/2,378.79 = 1,323.82/x
3. Step 3: Cross multiply
   1,722.79x = 2,378.79 × 1,323.82
4. Step 4: Simplify right side
   1,722.79x = 3,149,086.42
5. Step 5: Solve for x
   x = 3,149,086.42/1,722.79
6. Step 6: Final answer
   x = 1,827.90