Finding the Fourth Proportional to 2,047.31, 3,072.30 and 1,123.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.31 : 3,072.30 = 1,123.51 : x
2. Step 2: Convert to fraction form
   2,047.31/3,072.30 = 1,123.51/x
3. Step 3: Cross multiply
   2,047.31x = 3,072.30 × 1,123.51
4. Step 4: Simplify right side
   2,047.31x = 3,451,759.77
5. Step 5: Solve for x
   x = 3,451,759.77/2,047.31
6. Step 6: Final answer
   x = 1,686.00