Finding the Fourth Proportional to 1,449.73, 2,171.86 and 1,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,449.73 : 2,171.86 = 1,123.50 : x
2. Step 2: Convert to fraction form
   1,449.73/2,171.86 = 1,123.50/x
3. Step 3: Cross multiply
   1,449.73x = 2,171.86 × 1,123.50
4. Step 4: Simplify right side
   1,449.73x = 2,440,076.38
5. Step 5: Solve for x
   x = 2,440,076.38/1,449.73
6. Step 6: Final answer
   x = 1,683.13