Finding the Fourth Proportional to 1,412.72, 1,949.96 and 853.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.72 : 1,949.96 = 853.10 : x
2. Step 2: Convert to fraction form
   1,412.72/1,949.96 = 853.10/x
3. Step 3: Cross multiply
   1,412.72x = 1,949.96 × 853.10
4. Step 4: Simplify right side
   1,412.72x = 1,663,510.88
5. Step 5: Solve for x
   x = 1,663,510.88/1,412.72
6. Step 6: Final answer
   x = 1,177.52