Finding the Fourth Proportional to 3,843.55, 5,764.71 and 1,245.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,843.55 : 5,764.71 = 1,245.88 : x
2. Step 2: Convert to fraction form
   3,843.55/5,764.71 = 1,245.88/x
3. Step 3: Cross multiply
   3,843.55x = 5,764.71 × 1,245.88
4. Step 4: Simplify right side
   3,843.55x = 7,182,108.07
5. Step 5: Solve for x
   x = 7,182,108.07/3,843.55
6. Step 6: Final answer
   x = 1,868.62