Finding the Fourth Proportional to 1,012.34, 1,397.01 and 570.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.34 : 1,397.01 = 570.24 : x
2. Step 2: Convert to fraction form
   1,012.34/1,397.01 = 570.24/x
3. Step 3: Cross multiply
   1,012.34x = 1,397.01 × 570.24
4. Step 4: Simplify right side
   1,012.34x = 796,630.98
5. Step 5: Solve for x
   x = 796,630.98/1,012.34
6. Step 6: Final answer
   x = 786.92