Finding the Fourth Proportional to 2,077.30, 3,099.67 and 2,065.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.30 : 3,099.67 = 2,065.15 : x
2. Step 2: Convert to fraction form
   2,077.30/3,099.67 = 2,065.15/x
3. Step 3: Cross multiply
   2,077.30x = 3,099.67 × 2,065.15
4. Step 4: Simplify right side
   2,077.30x = 6,401,283.50
5. Step 5: Solve for x
   x = 6,401,283.50/2,077.30
6. Step 6: Final answer
   x = 3,081.54