Finding the Fourth Proportional to 2,419.86, 3,339.72 and 1,372.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.86 : 3,339.72 = 1,372.26 : x
2. Step 2: Convert to fraction form
   2,419.86/3,339.72 = 1,372.26/x
3. Step 3: Cross multiply
   2,419.86x = 3,339.72 × 1,372.26
4. Step 4: Simplify right side
   2,419.86x = 4,582,964.17
5. Step 5: Solve for x
   x = 4,582,964.17/2,419.86
6. Step 6: Final answer
   x = 1,893.90