Finding the Fourth Proportional to 1,084.35, 1,626.72 and 435.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.35 : 1,626.72 = 435.09 : x
2. Step 2: Convert to fraction form
   1,084.35/1,626.72 = 435.09/x
3. Step 3: Cross multiply
   1,084.35x = 1,626.72 × 435.09
4. Step 4: Simplify right side
   1,084.35x = 707,769.60
5. Step 5: Solve for x
   x = 707,769.60/1,084.35
6. Step 6: Final answer
   x = 652.71