Finding the Fourth Proportional to 1,412.58, 1,950.12 and 853.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.58 : 1,950.12 = 853.18 : x
2. Step 2: Convert to fraction form
   1,412.58/1,950.12 = 853.18/x
3. Step 3: Cross multiply
   1,412.58x = 1,950.12 × 853.18
4. Step 4: Simplify right side
   1,412.58x = 1,663,803.38
5. Step 5: Solve for x
   x = 1,663,803.38/1,412.58
6. Step 6: Final answer
   x = 1,177.85