Finding the Fourth Proportional to 2,165.34, 2,987.73 and 1,281.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165.34 : 2,987.73 = 1,281.27 : x
2. Step 2: Convert to fraction form
   2,165.34/2,987.73 = 1,281.27/x
3. Step 3: Cross multiply
   2,165.34x = 2,987.73 × 1,281.27
4. Step 4: Simplify right side
   2,165.34x = 3,828,088.82
5. Step 5: Solve for x
   x = 3,828,088.82/2,165.34
6. Step 6: Final answer
   x = 1,767.89