Finding the Fourth Proportional to 2,480.60, 3,420.42 and 1,583.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.60 : 3,420.42 = 1,583.15 : x
2. Step 2: Convert to fraction form
   2,480.60/3,420.42 = 1,583.15/x
3. Step 3: Cross multiply
   2,480.60x = 3,420.42 × 1,583.15
4. Step 4: Simplify right side
   2,480.60x = 5,415,037.92
5. Step 5: Solve for x
   x = 5,415,037.92/2,480.60
6. Step 6: Final answer
   x = 2,182.95