Finding the Fourth Proportional to 1,673.46, 2,511.69 and 852.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.46 : 2,511.69 = 852.30 : x
2. Step 2: Convert to fraction form
   1,673.46/2,511.69 = 852.30/x
3. Step 3: Cross multiply
   1,673.46x = 2,511.69 × 852.30
4. Step 4: Simplify right side
   1,673.46x = 2,140,713.39
5. Step 5: Solve for x
   x = 2,140,713.39/1,673.46
6. Step 6: Final answer
   x = 1,279.21