Finding the Fourth Proportional to 1,775.82, 2,665.59 and 852.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,775.82 : 2,665.59 = 852.15 : x
2. Step 2: Convert to fraction form
   1,775.82/2,665.59 = 852.15/x
3. Step 3: Cross multiply
   1,775.82x = 2,665.59 × 852.15
4. Step 4: Simplify right side
   1,775.82x = 2,271,482.52
5. Step 5: Solve for x
   x = 2,271,482.52/1,775.82
6. Step 6: Final answer
   x = 1,279.12