Finding the Fourth Proportional to 3,870.94, 5,343.86 and 2,456.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.94 : 5,343.86 = 2,456.07 : x
2. Step 2: Convert to fraction form
   3,870.94/5,343.86 = 2,456.07/x
3. Step 3: Cross multiply
   3,870.94x = 5,343.86 × 2,456.07
4. Step 4: Simplify right side
   3,870.94x = 13,124,855.23
5. Step 5: Solve for x
   x = 13,124,855.23/3,870.94
6. Step 6: Final answer
   x = 3,390.62