Finding the Fourth Proportional to 1,047.42, 1,570.82 and 354.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.42 : 1,570.82 = 354.11 : x
2. Step 2: Convert to fraction form
   1,047.42/1,570.82 = 354.11/x
3. Step 3: Cross multiply
   1,047.42x = 1,570.82 × 354.11
4. Step 4: Simplify right side
   1,047.42x = 556,233.45
5. Step 5: Solve for x
   x = 556,233.45/1,047.42
6. Step 6: Final answer
   x = 531.05