Finding the Fourth Proportional to 2,852.86, 4,279.38 and 1,271.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,852.86 : 4,279.38 = 1,271.74 : x
2. Step 2: Convert to fraction form
   2,852.86/4,279.38 = 1,271.74/x
3. Step 3: Cross multiply
   2,852.86x = 4,279.38 × 1,271.74
4. Step 4: Simplify right side
   2,852.86x = 5,442,258.72
5. Step 5: Solve for x
   x = 5,442,258.72/2,852.86
6. Step 6: Final answer
   x = 1,907.65