Finding the Fourth Proportional to 1,141.78, 1,703.71 and 1,072.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.78 : 1,703.71 = 1,072.12 : x
2. Step 2: Convert to fraction form
   1,141.78/1,703.71 = 1,072.12/x
3. Step 3: Cross multiply
   1,141.78x = 1,703.71 × 1,072.12
4. Step 4: Simplify right side
   1,141.78x = 1,826,576.20
5. Step 5: Solve for x
   x = 1,826,576.20/1,141.78
6. Step 6: Final answer
   x = 1,599.76