Finding the Fourth Proportional to 2,164.15, 2,986.54 and 1,267.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.15 : 2,986.54 = 1,267.69 : x
2. Step 2: Convert to fraction form
   2,164.15/2,986.54 = 1,267.69/x
3. Step 3: Cross multiply
   2,164.15x = 2,986.54 × 1,267.69
4. Step 4: Simplify right side
   2,164.15x = 3,786,001.01
5. Step 5: Solve for x
   x = 3,786,001.01/2,164.15
6. Step 6: Final answer
   x = 1,749.42