Finding the Fourth Proportional to 2,610.77, 3,916.61 and 1,379.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.77 : 3,916.61 = 1,379.21 : x
2. Step 2: Convert to fraction form
   2,610.77/3,916.61 = 1,379.21/x
3. Step 3: Cross multiply
   2,610.77x = 3,916.61 × 1,379.21
4. Step 4: Simplify right side
   2,610.77x = 5,401,820.78
5. Step 5: Solve for x
   x = 5,401,820.78/2,610.77
6. Step 6: Final answer
   x = 2,069.05