Finding the Fourth Proportional to 1,535.50, 2,304.75 and 1,123.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.50 : 2,304.75 = 1,123.39 : x
2. Step 2: Convert to fraction form
   1,535.50/2,304.75 = 1,123.39/x
3. Step 3: Cross multiply
   1,535.50x = 2,304.75 × 1,123.39
4. Step 4: Simplify right side
   1,535.50x = 2,589,133.10
5. Step 5: Solve for x
   x = 2,589,133.10/1,535.50
6. Step 6: Final answer
   x = 1,686.18