Finding the Fourth Proportional to 1,053.33, 1,451.94 and 721.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.33 : 1,451.94 = 721.18 : x
2. Step 2: Convert to fraction form
   1,053.33/1,451.94 = 721.18/x
3. Step 3: Cross multiply
   1,053.33x = 1,451.94 × 721.18
4. Step 4: Simplify right side
   1,053.33x = 1,047,111.90
5. Step 5: Solve for x
   x = 1,047,111.90/1,053.33
6. Step 6: Final answer
   x = 994.10