Finding the Fourth Proportional to 1,045.34, 1,442.57 and 579.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.34 : 1,442.57 = 579.59 : x
2. Step 2: Convert to fraction form
   1,045.34/1,442.57 = 579.59/x
3. Step 3: Cross multiply
   1,045.34x = 1,442.57 × 579.59
4. Step 4: Simplify right side
   1,045.34x = 836,099.15
5. Step 5: Solve for x
   x = 836,099.15/1,045.34
6. Step 6: Final answer
   x = 799.83