Finding the Fourth Proportional to 2,491.83, 3,438.78 and 1,372.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.83 : 3,438.78 = 1,372.83 : x
2. Step 2: Convert to fraction form
   2,491.83/3,438.78 = 1,372.83/x
3. Step 3: Cross multiply
   2,491.83x = 3,438.78 × 1,372.83
4. Step 4: Simplify right side
   2,491.83x = 4,720,860.35
5. Step 5: Solve for x
   x = 4,720,860.35/2,491.83
6. Step 6: Final answer
   x = 1,894.54