Finding the Fourth Proportional to 2,007.16, 3,012.34 and 853.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.16 : 3,012.34 = 853.24 : x
2. Step 2: Convert to fraction form
   2,007.16/3,012.34 = 853.24/x
3. Step 3: Cross multiply
   2,007.16x = 3,012.34 × 853.24
4. Step 4: Simplify right side
   2,007.16x = 2,570,248.98
5. Step 5: Solve for x
   x = 2,570,248.98/2,007.16
6. Step 6: Final answer
   x = 1,280.54