Finding the Fourth Proportional to 1,123.42, 1,684.04 and 575.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.42 : 1,684.04 = 575.86 : x
2. Step 2: Convert to fraction form
   1,123.42/1,684.04 = 575.86/x
3. Step 3: Cross multiply
   1,123.42x = 1,684.04 × 575.86
4. Step 4: Simplify right side
   1,123.42x = 969,771.27
5. Step 5: Solve for x
   x = 969,771.27/1,123.42
6. Step 6: Final answer
   x = 863.23