Finding the Fourth Proportional to 1,013.58, 1,399.02 and 594.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.58 : 1,399.02 = 594.02 : x
2. Step 2: Convert to fraction form
   1,013.58/1,399.02 = 594.02/x
3. Step 3: Cross multiply
   1,013.58x = 1,399.02 × 594.02
4. Step 4: Simplify right side
   1,013.58x = 831,045.86
5. Step 5: Solve for x
   x = 831,045.86/1,013.58
6. Step 6: Final answer
   x = 819.91