Finding the Fourth Proportional to 2,152.72, 3,228.82 and 1,042.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.72 : 3,228.82 = 1,042.96 : x
2. Step 2: Convert to fraction form
   2,152.72/3,228.82 = 1,042.96/x
3. Step 3: Cross multiply
   2,152.72x = 3,228.82 × 1,042.96
4. Step 4: Simplify right side
   2,152.72x = 3,367,530.11
5. Step 5: Solve for x
   x = 3,367,530.11/2,152.72
6. Step 6: Final answer
   x = 1,564.31