Finding the Fourth Proportional to 3,870.02, 5,339.84 and 2,378.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.02 : 5,339.84 = 2,378.18 : x
2. Step 2: Convert to fraction form
   3,870.02/5,339.84 = 2,378.18/x
3. Step 3: Cross multiply
   3,870.02x = 5,339.84 × 2,378.18
4. Step 4: Simplify right side
   3,870.02x = 12,699,100.69
5. Step 5: Solve for x
   x = 12,699,100.69/3,870.02
6. Step 6: Final answer
   x = 3,281.40