Finding the Fourth Proportional to 2,285.48, 3,428.52 and 1,052.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.48 : 3,428.52 = 1,052.72 : x
2. Step 2: Convert to fraction form
   2,285.48/3,428.52 = 1,052.72/x
3. Step 3: Cross multiply
   2,285.48x = 3,428.52 × 1,052.72
4. Step 4: Simplify right side
   2,285.48x = 3,609,271.57
5. Step 5: Solve for x
   x = 3,609,271.57/2,285.48
6. Step 6: Final answer
   x = 1,579.22