Finding the Fourth Proportional to 2,916.59, 4,025.76 and 2,079.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,916.59 : 4,025.76 = 2,079.72 : x
2. Step 2: Convert to fraction form
   2,916.59/4,025.76 = 2,079.72/x
3. Step 3: Cross multiply
   2,916.59x = 4,025.76 × 2,079.72
4. Step 4: Simplify right side
   2,916.59x = 8,372,445.79
5. Step 5: Solve for x
   x = 8,372,445.79/2,916.59
6. Step 6: Final answer
   x = 2,870.63