Finding the Fourth Proportional to 2,419.68, 3,339.06 and 1,371.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.68 : 3,339.06 = 1,371.72 : x
2. Step 2: Convert to fraction form
   2,419.68/3,339.06 = 1,371.72/x
3. Step 3: Cross multiply
   2,419.68x = 3,339.06 × 1,371.72
4. Step 4: Simplify right side
   2,419.68x = 4,580,255.38
5. Step 5: Solve for x
   x = 4,580,255.38/2,419.68
6. Step 6: Final answer
   x = 1,892.92