Finding the Fourth Proportional to 2,799.98, 4,200.60 and 852.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.98 : 4,200.60 = 852.34 : x
2. Step 2: Convert to fraction form
   2,799.98/4,200.60 = 852.34/x
3. Step 3: Cross multiply
   2,799.98x = 4,200.60 × 852.34
4. Step 4: Simplify right side
   2,799.98x = 3,580,315.20
5. Step 5: Solve for x
   x = 3,580,315.20/2,799.98
6. Step 6: Final answer
   x = 1,278.69