Finding the Fourth Proportional to 3,870.37, 5,805.01 and 1,238.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.37 : 5,805.01 = 1,238.07 : x
2. Step 2: Convert to fraction form
   3,870.37/5,805.01 = 1,238.07/x
3. Step 3: Cross multiply
   3,870.37x = 5,805.01 × 1,238.07
4. Step 4: Simplify right side
   3,870.37x = 7,187,008.73
5. Step 5: Solve for x
   x = 7,187,008.73/3,870.37
6. Step 6: Final answer
   x = 1,856.93