Finding the Fourth Proportional to 1,118.33, 1,544.01 and 720.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.33 : 1,544.01 = 720.15 : x
2. Step 2: Convert to fraction form
   1,118.33/1,544.01 = 720.15/x
3. Step 3: Cross multiply
   1,118.33x = 1,544.01 × 720.15
4. Step 4: Simplify right side
   1,118.33x = 1,111,914.36
5. Step 5: Solve for x
   x = 1,111,914.36/1,118.33
6. Step 6: Final answer
   x = 994.26