Finding the Fourth Proportional to 1,081.69, 1,622.53 and 351.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.69 : 1,622.53 = 351.34 : x
2. Step 2: Convert to fraction form
   1,081.69/1,622.53 = 351.34/x
3. Step 3: Cross multiply
   1,081.69x = 1,622.53 × 351.34
4. Step 4: Simplify right side
   1,081.69x = 570,050.70
5. Step 5: Solve for x
   x = 570,050.70/1,081.69
6. Step 6: Final answer
   x = 527.00