Finding the Fourth Proportional to 1,053.18, 1,580.04 and 322.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.18 : 1,580.04 = 322.83 : x
2. Step 2: Convert to fraction form
   1,053.18/1,580.04 = 322.83/x
3. Step 3: Cross multiply
   1,053.18x = 1,580.04 × 322.83
4. Step 4: Simplify right side
   1,053.18x = 510,084.31
5. Step 5: Solve for x
   x = 510,084.31/1,053.18
6. Step 6: Final answer
   x = 484.33