Finding the Fourth Proportional to 2,159.50, 3,240.60 and 1,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.50 : 3,240.60 = 1,673.50 : x
2. Step 2: Convert to fraction form
   2,159.50/3,240.60 = 1,673.50/x
3. Step 3: Cross multiply
   2,159.50x = 3,240.60 × 1,673.50
4. Step 4: Simplify right side
   2,159.50x = 5,423,144.10
5. Step 5: Solve for x
   x = 5,423,144.10/2,159.50
6. Step 6: Final answer
   x = 2,511.30