Finding the Fourth Proportional to 1,965.56, 2,711.56 and 1,178.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.56 : 2,711.56 = 1,178.24 : x
2. Step 2: Convert to fraction form
   1,965.56/2,711.56 = 1,178.24/x
3. Step 3: Cross multiply
   1,965.56x = 2,711.56 × 1,178.24
4. Step 4: Simplify right side
   1,965.56x = 3,194,868.45
5. Step 5: Solve for x
   x = 3,194,868.45/1,965.56
6. Step 6: Final answer
   x = 1,625.42