Finding the Fourth Proportional to 1,013.31, 1,397.89 and 593.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.31 : 1,397.89 = 593.67 : x
2. Step 2: Convert to fraction form
   1,013.31/1,397.89 = 593.67/x
3. Step 3: Cross multiply
   1,013.31x = 1,397.89 × 593.67
4. Step 4: Simplify right side
   1,013.31x = 829,885.36
5. Step 5: Solve for x
   x = 829,885.36/1,013.31
6. Step 6: Final answer
   x = 818.98