Finding the Fourth Proportional to 889.47, 1,224.72 and 756.43

Step by Step Solution

1. Step 1: Write the proportion equation
   889.47 : 1,224.72 = 756.43 : x
2. Step 2: Convert to fraction form
   889.47/1,224.72 = 756.43/x
3. Step 3: Cross multiply
   889.47x = 1,224.72 × 756.43
4. Step 4: Simplify right side
   889.47x = 926,411.89
5. Step 5: Solve for x
   x = 926,411.89/889.47
6. Step 6: Final answer
   x = 1,041.53