Finding the Fourth Proportional to 1,013.01, 1,397.83 and 570.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.01 : 1,397.83 = 570.89 : x
2. Step 2: Convert to fraction form
   1,013.01/1,397.83 = 570.89/x
3. Step 3: Cross multiply
   1,013.01x = 1,397.83 × 570.89
4. Step 4: Simplify right side
   1,013.01x = 798,007.17
5. Step 5: Solve for x
   x = 798,007.17/1,013.01
6. Step 6: Final answer
   x = 787.76