Finding the Fourth Proportional to 1,036.54, 1,430.52 and 570.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.54 : 1,430.52 = 570.82 : x
2. Step 2: Convert to fraction form
   1,036.54/1,430.52 = 570.82/x
3. Step 3: Cross multiply
   1,036.54x = 1,430.52 × 570.82
4. Step 4: Simplify right side
   1,036.54x = 816,569.43
5. Step 5: Solve for x
   x = 816,569.43/1,036.54
6. Step 6: Final answer
   x = 787.78