Finding the Fourth Proportional to 1,081.62, 1,621.71 and 504.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.62 : 1,621.71 = 504.18 : x
2. Step 2: Convert to fraction form
   1,081.62/1,621.71 = 504.18/x
3. Step 3: Cross multiply
   1,081.62x = 1,621.71 × 504.18
4. Step 4: Simplify right side
   1,081.62x = 817,633.75
5. Step 5: Solve for x
   x = 817,633.75/1,081.62
6. Step 6: Final answer
   x = 755.93