Finding the Fourth Proportional to 1,056.53, 1,456.65 and 724.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.53 : 1,456.65 = 724.37 : x
2. Step 2: Convert to fraction form
   1,056.53/1,456.65 = 724.37/x
3. Step 3: Cross multiply
   1,056.53x = 1,456.65 × 724.37
4. Step 4: Simplify right side
   1,056.53x = 1,055,146.28
5. Step 5: Solve for x
   x = 1,055,146.28/1,056.53
6. Step 6: Final answer
   x = 998.69