Finding the Fourth Proportional to 1,491.42, 2,058.24 and 828.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.42 : 2,058.24 = 828.34 : x
2. Step 2: Convert to fraction form
   1,491.42/2,058.24 = 828.34/x
3. Step 3: Cross multiply
   1,491.42x = 2,058.24 × 828.34
4. Step 4: Simplify right side
   1,491.42x = 1,704,922.52
5. Step 5: Solve for x
   x = 1,704,922.52/1,491.42
6. Step 6: Final answer
   x = 1,143.15