Finding the Fourth Proportional to 1,046.31, 1,443.92 and 580.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.31 : 1,443.92 = 580.59 : x
2. Step 2: Convert to fraction form
   1,046.31/1,443.92 = 580.59/x
3. Step 3: Cross multiply
   1,046.31x = 1,443.92 × 580.59
4. Step 4: Simplify right side
   1,046.31x = 838,322.61
5. Step 5: Solve for x
   x = 838,322.61/1,046.31
6. Step 6: Final answer
   x = 801.22