Finding the Fourth Proportional to 1,189.05, 1,783.98 and 1,074.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.05 : 1,783.98 = 1,074.03 : x
2. Step 2: Convert to fraction form
   1,189.05/1,783.98 = 1,074.03/x
3. Step 3: Cross multiply
   1,189.05x = 1,783.98 × 1,074.03
4. Step 4: Simplify right side
   1,189.05x = 1,916,048.04
5. Step 5: Solve for x
   x = 1,916,048.04/1,189.05
6. Step 6: Final answer
   x = 1,611.41