Finding the Fourth Proportional to 1,491.52, 2,058.31 and 828.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.52 : 2,058.31 = 828.42 : x
2. Step 2: Convert to fraction form
   1,491.52/2,058.31 = 828.42/x
3. Step 3: Cross multiply
   1,491.52x = 2,058.31 × 828.42
4. Step 4: Simplify right side
   1,491.52x = 1,705,145.17
5. Step 5: Solve for x
   x = 1,705,145.17/1,491.52
6. Step 6: Final answer
   x = 1,143.23