Finding the Fourth Proportional to 3,870.38, 5,806.02 and 1,236.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.38 : 5,806.02 = 1,236.96 : x
2. Step 2: Convert to fraction form
   3,870.38/5,806.02 = 1,236.96/x
3. Step 3: Cross multiply
   3,870.38x = 5,806.02 × 1,236.96
4. Step 4: Simplify right side
   3,870.38x = 7,181,814.50
5. Step 5: Solve for x
   x = 7,181,814.50/3,870.38
6. Step 6: Final answer
   x = 1,855.58