Finding the Fourth Proportional to 1,338.66, 1,848.17 and 873.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.66 : 1,848.17 = 873.72 : x
2. Step 2: Convert to fraction form
   1,338.66/1,848.17 = 873.72/x
3. Step 3: Cross multiply
   1,338.66x = 1,848.17 × 873.72
4. Step 4: Simplify right side
   1,338.66x = 1,614,778.72
5. Step 5: Solve for x
   x = 1,614,778.72/1,338.66
6. Step 6: Final answer
   x = 1,206.27