Finding the Fourth Proportional to 1,012.67, 1,397.72 and 593.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.67 : 1,397.72 = 593.22 : x
2. Step 2: Convert to fraction form
   1,012.67/1,397.72 = 593.22/x
3. Step 3: Cross multiply
   1,012.67x = 1,397.72 × 593.22
4. Step 4: Simplify right side
   1,012.67x = 829,162.18
5. Step 5: Solve for x
   x = 829,162.18/1,012.67
6. Step 6: Final answer
   x = 818.79