Finding the Fourth Proportional to 1,114.71, 1,538.32 and 722.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.71 : 1,538.32 = 722.41 : x
2. Step 2: Convert to fraction form
   1,114.71/1,538.32 = 722.41/x
3. Step 3: Cross multiply
   1,114.71x = 1,538.32 × 722.41
4. Step 4: Simplify right side
   1,114.71x = 1,111,297.75
5. Step 5: Solve for x
   x = 1,111,297.75/1,114.71
6. Step 6: Final answer
   x = 996.94