Finding the Fourth Proportional to 2,128.36, 2,936.20 and 1,419.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.36 : 2,936.20 = 1,419.53 : x
2. Step 2: Convert to fraction form
   2,128.36/2,936.20 = 1,419.53/x
3. Step 3: Cross multiply
   2,128.36x = 2,936.20 × 1,419.53
4. Step 4: Simplify right side
   2,128.36x = 4,168,002.21
5. Step 5: Solve for x
   x = 4,168,002.21/2,128.36
6. Step 6: Final answer
   x = 1,958.32