Finding the Fourth Proportional to 2,605.56, 3,900.78 and 2,026.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.56 : 3,900.78 = 2,026.68 : x
2. Step 2: Convert to fraction form
   2,605.56/3,900.78 = 2,026.68/x
3. Step 3: Cross multiply
   2,605.56x = 3,900.78 × 2,026.68
4. Step 4: Simplify right side
   2,605.56x = 7,905,632.81
5. Step 5: Solve for x
   x = 7,905,632.81/2,605.56
6. Step 6: Final answer
   x = 3,034.14