Finding the Fourth Proportional to 2,642.27, 3,964.01 and 1,409.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.27 : 3,964.01 = 1,409.03 : x
2. Step 2: Convert to fraction form
   2,642.27/3,964.01 = 1,409.03/x
3. Step 3: Cross multiply
   2,642.27x = 3,964.01 × 1,409.03
4. Step 4: Simplify right side
   2,642.27x = 5,585,409.01
5. Step 5: Solve for x
   x = 5,585,409.01/2,642.27
6. Step 6: Final answer
   x = 2,113.87