Finding the Fourth Proportional to 2,920.86, 4,028.15 and 1,925.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.86 : 4,028.15 = 1,925.82 : x
2. Step 2: Convert to fraction form
   2,920.86/4,028.15 = 1,925.82/x
3. Step 3: Cross multiply
   2,920.86x = 4,028.15 × 1,925.82
4. Step 4: Simplify right side
   2,920.86x = 7,757,491.83
5. Step 5: Solve for x
   x = 7,757,491.83/2,920.86
6. Step 6: Final answer
   x = 2,655.89