Finding the Fourth Proportional to 2,057.60, 3,083.34 and 1,619.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.60 : 3,083.34 = 1,619.30 : x
2. Step 2: Convert to fraction form
   2,057.60/3,083.34 = 1,619.30/x
3. Step 3: Cross multiply
   2,057.60x = 3,083.34 × 1,619.30
4. Step 4: Simplify right side
   2,057.60x = 4,992,852.46
5. Step 5: Solve for x
   x = 4,992,852.46/2,057.60
6. Step 6: Final answer
   x = 2,426.54