Finding the Fourth Proportional to 1,375.14, 2,057.89 and 985.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.14 : 2,057.89 = 985.57 : x
2. Step 2: Convert to fraction form
   1,375.14/2,057.89 = 985.57/x
3. Step 3: Cross multiply
   1,375.14x = 2,057.89 × 985.57
4. Step 4: Simplify right side
   1,375.14x = 2,028,194.65
5. Step 5: Solve for x
   x = 2,028,194.65/1,375.14
6. Step 6: Final answer
   x = 1,474.90