Finding the Fourth Proportional to 1,406.39, 2,109.71 and 482.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.39 : 2,109.71 = 482.18 : x
2. Step 2: Convert to fraction form
   1,406.39/2,109.71 = 482.18/x
3. Step 3: Cross multiply
   1,406.39x = 2,109.71 × 482.18
4. Step 4: Simplify right side
   1,406.39x = 1,017,250.62
5. Step 5: Solve for x
   x = 1,017,250.62/1,406.39
6. Step 6: Final answer
   x = 723.31