Finding the Fourth Proportional to 1,673.32, 2,309.05 and 965.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.32 : 2,309.05 = 965.15 : x
2. Step 2: Convert to fraction form
   1,673.32/2,309.05 = 965.15/x
3. Step 3: Cross multiply
   1,673.32x = 2,309.05 × 965.15
4. Step 4: Simplify right side
   1,673.32x = 2,228,579.61
5. Step 5: Solve for x
   x = 2,228,579.61/1,673.32
6. Step 6: Final answer
   x = 1,331.83