Finding the Fourth Proportional to 3,980.76, 5,491.98 and 2,583

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.76 : 5,491.98 = 2,583 : x
2. Step 2: Convert to fraction form
   3,980.76/5,491.98 = 2,583/x
3. Step 3: Cross multiply
   3,980.76x = 5,491.98 × 2,583
4. Step 4: Simplify right side
   3,980.76x = 14,185,784.34
5. Step 5: Solve for x
   x = 14,185,784.34/3,980.76
6. Step 6: Final answer
   x = 3,563.59