Finding the Fourth Proportional to 2,862.18, 4,289.61 and 2,803.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.18 : 4,289.61 = 2,803.86 : x
2. Step 2: Convert to fraction form
   2,862.18/4,289.61 = 2,803.86/x
3. Step 3: Cross multiply
   2,862.18x = 4,289.61 × 2,803.86
4. Step 4: Simplify right side
   2,862.18x = 12,027,465.89
5. Step 5: Solve for x
   x = 12,027,465.89/2,862.18
6. Step 6: Final answer
   x = 4,202.20