Finding the Fourth Proportional to 2,911.08, 4,369.86 and 2,865.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.08 : 4,369.86 = 2,865.72 : x
2. Step 2: Convert to fraction form
   2,911.08/4,369.86 = 2,865.72/x
3. Step 3: Cross multiply
   2,911.08x = 4,369.86 × 2,865.72
4. Step 4: Simplify right side
   2,911.08x = 12,522,795.20
5. Step 5: Solve for x
   x = 12,522,795.20/2,911.08
6. Step 6: Final answer
   x = 4,301.77