Finding the Fourth Proportional to 1,114.92, 1,538.55 and 722.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.92 : 1,538.55 = 722.34 : x
2. Step 2: Convert to fraction form
   1,114.92/1,538.55 = 722.34/x
3. Step 3: Cross multiply
   1,114.92x = 1,538.55 × 722.34
4. Step 4: Simplify right side
   1,114.92x = 1,111,356.21
5. Step 5: Solve for x
   x = 1,111,356.21/1,114.92
6. Step 6: Final answer
   x = 996.80