Finding the Fourth Proportional to 1,036.25, 1,430.12 and 570.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.25 : 1,430.12 = 570.59 : x
2. Step 2: Convert to fraction form
   1,036.25/1,430.12 = 570.59/x
3. Step 3: Cross multiply
   1,036.25x = 1,430.12 × 570.59
4. Step 4: Simplify right side
   1,036.25x = 816,012.17
5. Step 5: Solve for x
   x = 816,012.17/1,036.25
6. Step 6: Final answer
   x = 787.47