Finding the Fourth Proportional to 2,448.23, 3,378.61 and 1,386.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,448.23 : 3,378.61 = 1,386.00 : x
2. Step 2: Convert to fraction form
   2,448.23/3,378.61 = 1,386.00/x
3. Step 3: Cross multiply
   2,448.23x = 3,378.61 × 1,386.00
4. Step 4: Simplify right side
   2,448.23x = 4,682,736.57
5. Step 5: Solve for x
   x = 4,682,736.57/2,448.23
6. Step 6: Final answer
   x = 1,912.70