Finding the Fourth Proportional to 1,673.39, 2,308.20 and 1,318.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.39 : 2,308.20 = 1,318.77 : x
2. Step 2: Convert to fraction form
   1,673.39/2,308.20 = 1,318.77/x
3. Step 3: Cross multiply
   1,673.39x = 2,308.20 × 1,318.77
4. Step 4: Simplify right side
   1,673.39x = 3,043,978.73
5. Step 5: Solve for x
   x = 3,043,978.73/1,673.39
6. Step 6: Final answer
   x = 1,819.04