Finding the Fourth Proportional to 1,141.31, 1,703.80 and 1,018.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.31 : 1,703.80 = 1,018.28 : x
2. Step 2: Convert to fraction form
   1,141.31/1,703.80 = 1,018.28/x
3. Step 3: Cross multiply
   1,141.31x = 1,703.80 × 1,018.28
4. Step 4: Simplify right side
   1,141.31x = 1,734,945.46
5. Step 5: Solve for x
   x = 1,734,945.46/1,141.31
6. Step 6: Final answer
   x = 1,520.14