Finding the Fourth Proportional to 1,722.13, 2,376.71 and 1,441.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.13 : 2,376.71 = 1,441.87 : x
2. Step 2: Convert to fraction form
   1,722.13/2,376.71 = 1,441.87/x
3. Step 3: Cross multiply
   1,722.13x = 2,376.71 × 1,441.87
4. Step 4: Simplify right side
   1,722.13x = 3,426,906.85
5. Step 5: Solve for x
   x = 3,426,906.85/1,722.13
6. Step 6: Final answer
   x = 1,989.92