Finding the Fourth Proportional to 2,830.88, 3,871.96 and 2,785.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.88 : 3,871.96 = 2,785.52 : x
2. Step 2: Convert to fraction form
   2,830.88/3,871.96 = 2,785.52/x
3. Step 3: Cross multiply
   2,830.88x = 3,871.96 × 2,785.52
4. Step 4: Simplify right side
   2,830.88x = 10,785,422.02
5. Step 5: Solve for x
   x = 10,785,422.02/2,830.88
6. Step 6: Final answer
   x = 3,809.92