Finding the Fourth Proportional to 1,960.57, 2,705.49 and 1,175.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.57 : 2,705.49 = 1,175.05 : x
2. Step 2: Convert to fraction form
   1,960.57/2,705.49 = 1,175.05/x
3. Step 3: Cross multiply
   1,960.57x = 2,705.49 × 1,175.05
4. Step 4: Simplify right side
   1,960.57x = 3,179,086.02
5. Step 5: Solve for x
   x = 3,179,086.02/1,960.57
6. Step 6: Final answer
   x = 1,621.51