Finding the Fourth Proportional to 1,047.46, 1,570.59 and 316.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.46 : 1,570.59 = 316.82 : x
2. Step 2: Convert to fraction form
   1,047.46/1,570.59 = 316.82/x
3. Step 3: Cross multiply
   1,047.46x = 1,570.59 × 316.82
4. Step 4: Simplify right side
   1,047.46x = 497,594.32
5. Step 5: Solve for x
   x = 497,594.32/1,047.46
6. Step 6: Final answer
   x = 475.05