Finding the Fourth Proportional to 3,842.27, 5,764.32 and 1,245.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,842.27 : 5,764.32 = 1,245.21 : x
2. Step 2: Convert to fraction form
   3,842.27/5,764.32 = 1,245.21/x
3. Step 3: Cross multiply
   3,842.27x = 5,764.32 × 1,245.21
4. Step 4: Simplify right side
   3,842.27x = 7,177,753.86
5. Step 5: Solve for x
   x = 7,177,753.86/3,842.27
6. Step 6: Final answer
   x = 1,868.10