Finding the Fourth Proportional to 1,119.38, 1,668.22 and 1,061.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.38 : 1,668.22 = 1,061.06 : x
2. Step 2: Convert to fraction form
   1,119.38/1,668.22 = 1,061.06/x
3. Step 3: Cross multiply
   1,119.38x = 1,668.22 × 1,061.06
4. Step 4: Simplify right side
   1,119.38x = 1,770,070.52
5. Step 5: Solve for x
   x = 1,770,070.52/1,119.38
6. Step 6: Final answer
   x = 1,581.30