Finding the Fourth Proportional to 1,436.04, 2,155.05 and 570.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.04 : 2,155.05 = 570.42 : x
2. Step 2: Convert to fraction form
   1,436.04/2,155.05 = 570.42/x
3. Step 3: Cross multiply
   1,436.04x = 2,155.05 × 570.42
4. Step 4: Simplify right side
   1,436.04x = 1,229,283.62
5. Step 5: Solve for x
   x = 1,229,283.62/1,436.04
6. Step 6: Final answer
   x = 856.02