Finding the Fourth Proportional to 1,123.07, 1,683.04 and 574.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.07 : 1,683.04 = 574.09 : x
2. Step 2: Convert to fraction form
   1,123.07/1,683.04 = 574.09/x
3. Step 3: Cross multiply
   1,123.07x = 1,683.04 × 574.09
4. Step 4: Simplify right side
   1,123.07x = 966,210.25
5. Step 5: Solve for x
   x = 966,210.25/1,123.07
6. Step 6: Final answer
   x = 860.33