Finding the Fourth Proportional to 1,242.09, 1,714.18 and 744.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242.09 : 1,714.18 = 744.72 : x
2. Step 2: Convert to fraction form
   1,242.09/1,714.18 = 744.72/x
3. Step 3: Cross multiply
   1,242.09x = 1,714.18 × 744.72
4. Step 4: Simplify right side
   1,242.09x = 1,276,578.92
5. Step 5: Solve for x
   x = 1,276,578.92/1,242.09
6. Step 6: Final answer
   x = 1,027.77