Finding the Fourth Proportional to 1,013.04, 1,397.98 and 570.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.04 : 1,397.98 = 570.98 : x
2. Step 2: Convert to fraction form
   1,013.04/1,397.98 = 570.98/x
3. Step 3: Cross multiply
   1,013.04x = 1,397.98 × 570.98
4. Step 4: Simplify right side
   1,013.04x = 798,218.62
5. Step 5: Solve for x
   x = 798,218.62/1,013.04
6. Step 6: Final answer
   x = 787.94