Finding the Fourth Proportional to 3,820.76, 5,731.11 and 1,223.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.76 : 5,731.11 = 1,223.69 : x
2. Step 2: Convert to fraction form
   3,820.76/5,731.11 = 1,223.69/x
3. Step 3: Cross multiply
   3,820.76x = 5,731.11 × 1,223.69
4. Step 4: Simplify right side
   3,820.76x = 7,013,073.34
5. Step 5: Solve for x
   x = 7,013,073.34/3,820.76
6. Step 6: Final answer
   x = 1,835.52