Finding the Fourth Proportional to 1,726.72, 2,378.70 and 1,426.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.72 : 2,378.70 = 1,426.71 : x
2. Step 2: Convert to fraction form
   1,726.72/2,378.70 = 1,426.71/x
3. Step 3: Cross multiply
   1,726.72x = 2,378.70 × 1,426.71
4. Step 4: Simplify right side
   1,726.72x = 3,393,724.00
5. Step 5: Solve for x
   x = 3,393,724.00/1,726.72
6. Step 6: Final answer
   x = 1,965.42