Finding the Fourth Proportional to 1,392.69, 2,089.00 and 570.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.69 : 2,089.00 = 570.41 : x
2. Step 2: Convert to fraction form
   1,392.69/2,089.00 = 570.41/x
3. Step 3: Cross multiply
   1,392.69x = 2,089.00 × 570.41
4. Step 4: Simplify right side
   1,392.69x = 1,191,573.19
5. Step 5: Solve for x
   x = 1,191,573.19/1,392.69
6. Step 6: Final answer
   x = 855.59