Finding the Fourth Proportional to 1,143.28, 1,577.46 and 723.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.28 : 1,577.46 = 723.52 : x
2. Step 2: Convert to fraction form
   1,143.28/1,577.46 = 723.52/x
3. Step 3: Cross multiply
   1,143.28x = 1,577.46 × 723.52
4. Step 4: Simplify right side
   1,143.28x = 1,141,323.86
5. Step 5: Solve for x
   x = 1,141,323.86/1,143.28
6. Step 6: Final answer
   x = 998.29