Finding the Fourth Proportional to 3,674.62, 5,483.59 and 3,280.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,674.62 : 5,483.59 = 3,280.40 : x
2. Step 2: Convert to fraction form
   3,674.62/5,483.59 = 3,280.40/x
3. Step 3: Cross multiply
   3,674.62x = 5,483.59 × 3,280.40
4. Step 4: Simplify right side
   3,674.62x = 17,988,374.14
5. Step 5: Solve for x
   x = 17,988,374.14/3,674.62
6. Step 6: Final answer
   x = 4,895.31