Finding the Fourth Proportional to 1,412.50, 1,949.22 and 853.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.50 : 1,949.22 = 853.43 : x
2. Step 2: Convert to fraction form
   1,412.50/1,949.22 = 853.43/x
3. Step 3: Cross multiply
   1,412.50x = 1,949.22 × 853.43
4. Step 4: Simplify right side
   1,412.50x = 1,663,522.82
5. Step 5: Solve for x
   x = 1,663,522.82/1,412.50
6. Step 6: Final answer
   x = 1,177.72