Finding the Fourth Proportional to 3,112.44, 4,665.78 and 1,059

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.44 : 4,665.78 = 1,059 : x
2. Step 2: Convert to fraction form
   3,112.44/4,665.78 = 1,059/x
3. Step 3: Cross multiply
   3,112.44x = 4,665.78 × 1,059
4. Step 4: Simplify right side
   3,112.44x = 4,941,061.02
5. Step 5: Solve for x
   x = 4,941,061.02/3,112.44
6. Step 6: Final answer
   x = 1,587.52