Finding the Fourth Proportional to 1,036.06, 1,429.74 and 570.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.06 : 1,429.74 = 570.31 : x
2. Step 2: Convert to fraction form
   1,036.06/1,429.74 = 570.31/x
3. Step 3: Cross multiply
   1,036.06x = 1,429.74 × 570.31
4. Step 4: Simplify right side
   1,036.06x = 815,395.02
5. Step 5: Solve for x
   x = 815,395.02/1,036.06
6. Step 6: Final answer
   x = 787.02