Finding the Fourth Proportional to 2,165.06, 2,987.56 and 1,326

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165.06 : 2,987.56 = 1,326 : x
2. Step 2: Convert to fraction form
   2,165.06/2,987.56 = 1,326/x
3. Step 3: Cross multiply
   2,165.06x = 2,987.56 × 1,326
4. Step 4: Simplify right side
   2,165.06x = 3,961,504.56
5. Step 5: Solve for x
   x = 3,961,504.56/2,165.06
6. Step 6: Final answer
   x = 1,829.74