Finding the Fourth Proportional to 1,053.30, 1,579.05 and 744.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.30 : 1,579.05 = 744.18 : x
2. Step 2: Convert to fraction form
   1,053.30/1,579.05 = 744.18/x
3. Step 3: Cross multiply
   1,053.30x = 1,579.05 × 744.18
4. Step 4: Simplify right side
   1,053.30x = 1,175,097.43
5. Step 5: Solve for x
   x = 1,175,097.43/1,053.30
6. Step 6: Final answer
   x = 1,115.63