Finding the Fourth Proportional to 2,080.69, 3,123.17 and 1,623.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.69 : 3,123.17 = 1,623.47 : x
2. Step 2: Convert to fraction form
   2,080.69/3,123.17 = 1,623.47/x
3. Step 3: Cross multiply
   2,080.69x = 3,123.17 × 1,623.47
4. Step 4: Simplify right side
   2,080.69x = 5,070,355.15
5. Step 5: Solve for x
   x = 5,070,355.15/2,080.69
6. Step 6: Final answer
   x = 2,436.87