Finding the Fourth Proportional to 1,238.81, 1,706.72 and 1,180.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.81 : 1,706.72 = 1,180.49 : x
2. Step 2: Convert to fraction form
   1,238.81/1,706.72 = 1,180.49/x
3. Step 3: Cross multiply
   1,238.81x = 1,706.72 × 1,180.49
4. Step 4: Simplify right side
   1,238.81x = 2,014,764.26
5. Step 5: Solve for x
   x = 2,014,764.26/1,238.81
6. Step 6: Final answer
   x = 1,626.37