Finding the Fourth Proportional to 3,870.51, 5,806.08 and 1,238.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.51 : 5,806.08 = 1,238.37 : x
2. Step 2: Convert to fraction form
   3,870.51/5,806.08 = 1,238.37/x
3. Step 3: Cross multiply
   3,870.51x = 5,806.08 × 1,238.37
4. Step 4: Simplify right side
   3,870.51x = 7,190,075.29
5. Step 5: Solve for x
   x = 7,190,075.29/3,870.51
6. Step 6: Final answer
   x = 1,857.66