Finding the Fourth Proportional to 1,123.80, 1,684.69 and 604.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.80 : 1,684.69 = 604.08 : x
2. Step 2: Convert to fraction form
   1,123.80/1,684.69 = 604.08/x
3. Step 3: Cross multiply
   1,123.80x = 1,684.69 × 604.08
4. Step 4: Simplify right side
   1,123.80x = 1,017,687.54
5. Step 5: Solve for x
   x = 1,017,687.54/1,123.80
6. Step 6: Final answer
   x = 905.58