Finding the Fourth Proportional to 2,115.49, 3,169.87 and 1,419.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115.49 : 3,169.87 = 1,419.59 : x
2. Step 2: Convert to fraction form
   2,115.49/3,169.87 = 1,419.59/x
3. Step 3: Cross multiply
   2,115.49x = 3,169.87 × 1,419.59
4. Step 4: Simplify right side
   2,115.49x = 4,499,915.75
5. Step 5: Solve for x
   x = 4,499,915.75/2,115.49
6. Step 6: Final answer
   x = 2,127.13