Finding the Fourth Proportional to 3,112.48, 4,670.56 and 1,263.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.48 : 4,670.56 = 1,263.76 : x
2. Step 2: Convert to fraction form
   3,112.48/4,670.56 = 1,263.76/x
3. Step 3: Cross multiply
   3,112.48x = 4,670.56 × 1,263.76
4. Step 4: Simplify right side
   3,112.48x = 5,902,466.91
5. Step 5: Solve for x
   x = 5,902,466.91/3,112.48
6. Step 6: Final answer
   x = 1,896.39