Finding the Fourth Proportional to 1,408.82, 1,926.91 and 1,386.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.82 : 1,926.91 = 1,386.14 : x
2. Step 2: Convert to fraction form
   1,408.82/1,926.91 = 1,386.14/x
3. Step 3: Cross multiply
   1,408.82x = 1,926.91 × 1,386.14
4. Step 4: Simplify right side
   1,408.82x = 2,670,959.13
5. Step 5: Solve for x
   x = 2,670,959.13/1,408.82
6. Step 6: Final answer
   x = 1,895.89