Finding the Fourth Proportional to 1,123.91, 1,682.96 and 576.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.91 : 1,682.96 = 576.35 : x
2. Step 2: Convert to fraction form
   1,123.91/1,682.96 = 576.35/x
3. Step 3: Cross multiply
   1,123.91x = 1,682.96 × 576.35
4. Step 4: Simplify right side
   1,123.91x = 969,974.00
5. Step 5: Solve for x
   x = 969,974.00/1,123.91
6. Step 6: Final answer
   x = 863.04