Finding the Fourth Proportional to 1,012.52, 1,397.16 and 570.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.52 : 1,397.16 = 570.41 : x
2. Step 2: Convert to fraction form
   1,012.52/1,397.16 = 570.41/x
3. Step 3: Cross multiply
   1,012.52x = 1,397.16 × 570.41
4. Step 4: Simplify right side
   1,012.52x = 796,954.04
5. Step 5: Solve for x
   x = 796,954.04/1,012.52
6. Step 6: Final answer
   x = 787.10