Finding the Fourth Proportional to 1,673.96, 2,508.82 and 1,187.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.96 : 2,508.82 = 1,187.12 : x
2. Step 2: Convert to fraction form
   1,673.96/2,508.82 = 1,187.12/x
3. Step 3: Cross multiply
   1,673.96x = 2,508.82 × 1,187.12
4. Step 4: Simplify right side
   1,673.96x = 2,978,270.40
5. Step 5: Solve for x
   x = 2,978,270.40/1,673.96
6. Step 6: Final answer
   x = 1,779.18