Finding the Fourth Proportional to 1,036.38, 1,430.20 and 570.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.38 : 1,430.20 = 570.62 : x
2. Step 2: Convert to fraction form
   1,036.38/1,430.20 = 570.62/x
3. Step 3: Cross multiply
   1,036.38x = 1,430.20 × 570.62
4. Step 4: Simplify right side
   1,036.38x = 816,100.72
5. Step 5: Solve for x
   x = 816,100.72/1,036.38
6. Step 6: Final answer
   x = 787.45