Finding the Fourth Proportional to 2,276.47, 3,141.58 and 1,281.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.47 : 3,141.58 = 1,281.78 : x
2. Step 2: Convert to fraction form
   2,276.47/3,141.58 = 1,281.78/x
3. Step 3: Cross multiply
   2,276.47x = 3,141.58 × 1,281.78
4. Step 4: Simplify right side
   2,276.47x = 4,026,814.41
5. Step 5: Solve for x
   x = 4,026,814.41/2,276.47
6. Step 6: Final answer
   x = 1,768.89