Finding the Fourth Proportional to 1,045.94, 1,568.69 and 315.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.94 : 1,568.69 = 315.37 : x
2. Step 2: Convert to fraction form
   1,045.94/1,568.69 = 315.37/x
3. Step 3: Cross multiply
   1,045.94x = 1,568.69 × 315.37
4. Step 4: Simplify right side
   1,045.94x = 494,708.35
5. Step 5: Solve for x
   x = 494,708.35/1,045.94
6. Step 6: Final answer
   x = 472.98