Finding the Fourth Proportional to 2,162.86, 2,984.82 and 1,279.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.86 : 2,984.82 = 1,279.42 : x
2. Step 2: Convert to fraction form
   2,162.86/2,984.82 = 1,279.42/x
3. Step 3: Cross multiply
   2,162.86x = 2,984.82 × 1,279.42
4. Step 4: Simplify right side
   2,162.86x = 3,818,838.40
5. Step 5: Solve for x
   x = 3,818,838.40/2,162.86
6. Step 6: Final answer
   x = 1,765.64