Finding the Fourth Proportional to 1,726.14, 2,586.74 and 1,380.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.14 : 2,586.74 = 1,380.52 : x
2. Step 2: Convert to fraction form
   1,726.14/2,586.74 = 1,380.52/x
3. Step 3: Cross multiply
   1,726.14x = 2,586.74 × 1,380.52
4. Step 4: Simplify right side
   1,726.14x = 3,571,046.30
5. Step 5: Solve for x
   x = 3,571,046.30/1,726.14
6. Step 6: Final answer
   x = 2,068.80