Finding the Fourth Proportional to 3,870.68, 5,804.94 and 1,238.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.68 : 5,804.94 = 1,238.18 : x
2. Step 2: Convert to fraction form
   3,870.68/5,804.94 = 1,238.18/x
3. Step 3: Cross multiply
   3,870.68x = 5,804.94 × 1,238.18
4. Step 4: Simplify right side
   3,870.68x = 7,187,560.61
5. Step 5: Solve for x
   x = 7,187,560.61/3,870.68
6. Step 6: Final answer
   x = 1,856.92