Finding the Fourth Proportional to 1,123.02, 1,549.32 and 828.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.02 : 1,549.32 = 828.96 : x
2. Step 2: Convert to fraction form
   1,123.02/1,549.32 = 828.96/x
3. Step 3: Cross multiply
   1,123.02x = 1,549.32 × 828.96
4. Step 4: Simplify right side
   1,123.02x = 1,284,324.31
5. Step 5: Solve for x
   x = 1,284,324.31/1,123.02
6. Step 6: Final answer
   x = 1,143.63