Finding the Fourth Proportional to 3,042.48, 4,539.84 and 2,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,042.48 : 4,539.84 = 2,856.72 : x
2. Step 2: Convert to fraction form
   3,042.48/4,539.84 = 2,856.72/x
3. Step 3: Cross multiply
   3,042.48x = 4,539.84 × 2,856.72
4. Step 4: Simplify right side
   3,042.48x = 12,969,051.72
5. Step 5: Solve for x
   x = 12,969,051.72/3,042.48
6. Step 6: Final answer
   x = 4,262.66