Finding the Fourth Proportional to 1,013.61, 1,399.05 and 593.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.61 : 1,399.05 = 593.94 : x
2. Step 2: Convert to fraction form
   1,013.61/1,399.05 = 593.94/x
3. Step 3: Cross multiply
   1,013.61x = 1,399.05 × 593.94
4. Step 4: Simplify right side
   1,013.61x = 830,951.76
5. Step 5: Solve for x
   x = 830,951.76/1,013.61
6. Step 6: Final answer
   x = 819.79