Finding the Fourth Proportional to 3,820.64, 5,729.72 and 1,222.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.64 : 5,729.72 = 1,222.96 : x
2. Step 2: Convert to fraction form
   3,820.64/5,729.72 = 1,222.96/x
3. Step 3: Cross multiply
   3,820.64x = 5,729.72 × 1,222.96
4. Step 4: Simplify right side
   3,820.64x = 7,007,218.37
5. Step 5: Solve for x
   x = 7,007,218.37/3,820.64
6. Step 6: Final answer
   x = 1,834.04