Finding the Fourth Proportional to 2,402.21, 3,315.25 and 1,339.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.21 : 3,315.25 = 1,339.83 : x
2. Step 2: Convert to fraction form
   2,402.21/3,315.25 = 1,339.83/x
3. Step 3: Cross multiply
   2,402.21x = 3,315.25 × 1,339.83
4. Step 4: Simplify right side
   2,402.21x = 4,441,871.41
5. Step 5: Solve for x
   x = 4,441,871.41/2,402.21
6. Step 6: Final answer
   x = 1,849.08