Finding the Fourth Proportional to 2,453.96, 3,386.56 and 1,406.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.96 : 3,386.56 = 1,406.23 : x
2. Step 2: Convert to fraction form
   2,453.96/3,386.56 = 1,406.23/x
3. Step 3: Cross multiply
   2,453.96x = 3,386.56 × 1,406.23
4. Step 4: Simplify right side
   2,453.96x = 4,762,282.27
5. Step 5: Solve for x
   x = 4,762,282.27/2,453.96
6. Step 6: Final answer
   x = 1,940.65