Finding the Fourth Proportional to 3,820.64, 5,732.04 and 1,223.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.64 : 5,732.04 = 1,223.76 : x
2. Step 2: Convert to fraction form
   3,820.64/5,732.04 = 1,223.76/x
3. Step 3: Cross multiply
   3,820.64x = 5,732.04 × 1,223.76
4. Step 4: Simplify right side
   3,820.64x = 7,014,641.27
5. Step 5: Solve for x
   x = 7,014,641.27/3,820.64
6. Step 6: Final answer
   x = 1,835.99