Finding the Fourth Proportional to 2,042.40, 2,818.56 and 1,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.40 : 2,818.56 = 1,256.50 : x
2. Step 2: Convert to fraction form
   2,042.40/2,818.56 = 1,256.50/x
3. Step 3: Cross multiply
   2,042.40x = 2,818.56 × 1,256.50
4. Step 4: Simplify right side
   2,042.40x = 3,541,520.64
5. Step 5: Solve for x
   x = 3,541,520.64/2,042.40
6. Step 6: Final answer
   x = 1,734.00