Finding the Fourth Proportional to 1,123.72, 1,685.85 and 604.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.72 : 1,685.85 = 604.24 : x
2. Step 2: Convert to fraction form
   1,123.72/1,685.85 = 604.24/x
3. Step 3: Cross multiply
   1,123.72x = 1,685.85 × 604.24
4. Step 4: Simplify right side
   1,123.72x = 1,018,658.00
5. Step 5: Solve for x
   x = 1,018,658.00/1,123.72
6. Step 6: Final answer
   x = 906.51