Finding the Fourth Proportional to 1,500.12, 2,251.78 and 852.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.12 : 2,251.78 = 852.12 : x
2. Step 2: Convert to fraction form
   1,500.12/2,251.78 = 852.12/x
3. Step 3: Cross multiply
   1,500.12x = 2,251.78 × 852.12
4. Step 4: Simplify right side
   1,500.12x = 1,918,786.77
5. Step 5: Solve for x
   x = 1,918,786.77/1,500.12
6. Step 6: Final answer
   x = 1,279.09