Finding the Fourth Proportional to 2,789.75, 4,184.22 and 814.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.75 : 4,184.22 = 814.86 : x
2. Step 2: Convert to fraction form
   2,789.75/4,184.22 = 814.86/x
3. Step 3: Cross multiply
   2,789.75x = 4,184.22 × 814.86
4. Step 4: Simplify right side
   2,789.75x = 3,409,549.69
5. Step 5: Solve for x
   x = 3,409,549.69/2,789.75
6. Step 6: Final answer
   x = 1,222.17