Finding the Fourth Proportional to 1,210.43, 1,817.69 and 744.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,210.43 : 1,817.69 = 744.62 : x
2. Step 2: Convert to fraction form
   1,210.43/1,817.69 = 744.62/x
3. Step 3: Cross multiply
   1,210.43x = 1,817.69 × 744.62
4. Step 4: Simplify right side
   1,210.43x = 1,353,475.52
5. Step 5: Solve for x
   x = 1,353,475.52/1,210.43
6. Step 6: Final answer
   x = 1,118.18