Finding the Fourth Proportional to 1,440.82, 2,158.82 and 1,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.82 : 2,158.82 = 1,386.82 : x
2. Step 2: Convert to fraction form
   1,440.82/2,158.82 = 1,386.82/x
3. Step 3: Cross multiply
   1,440.82x = 2,158.82 × 1,386.82
4. Step 4: Simplify right side
   1,440.82x = 2,993,894.75
5. Step 5: Solve for x
   x = 2,993,894.75/1,440.82
6. Step 6: Final answer
   x = 2,077.91