Finding the Fourth Proportional to 1,035.95, 1,429.59 and 570.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.95 : 1,429.59 = 570.20 : x
2. Step 2: Convert to fraction form
   1,035.95/1,429.59 = 570.20/x
3. Step 3: Cross multiply
   1,035.95x = 1,429.59 × 570.20
4. Step 4: Simplify right side
   1,035.95x = 815,145.07
5. Step 5: Solve for x
   x = 815,145.07/1,035.95
6. Step 6: Final answer
   x = 786.86