Finding the Fourth Proportional to 1,123.30, 1,685.26 and 603.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.30 : 1,685.26 = 603.08 : x
2. Step 2: Convert to fraction form
   1,123.30/1,685.26 = 603.08/x
3. Step 3: Cross multiply
   1,123.30x = 1,685.26 × 603.08
4. Step 4: Simplify right side
   1,123.30x = 1,016,341.86
5. Step 5: Solve for x
   x = 1,016,341.86/1,123.30
6. Step 6: Final answer
   x = 904.78