Finding the Fourth Proportional to 1,491.33, 2,058.15 and 828.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.33 : 2,058.15 = 828.37 : x
2. Step 2: Convert to fraction form
   1,491.33/2,058.15 = 828.37/x
3. Step 3: Cross multiply
   1,491.33x = 2,058.15 × 828.37
4. Step 4: Simplify right side
   1,491.33x = 1,704,909.72
5. Step 5: Solve for x
   x = 1,704,909.72/1,491.33
6. Step 6: Final answer
   x = 1,143.21