Finding the Fourth Proportional to 3,978.94, 5,969.86 and 1,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.94 : 5,969.86 = 1,925.50 : x
2. Step 2: Convert to fraction form
   3,978.94/5,969.86 = 1,925.50/x
3. Step 3: Cross multiply
   3,978.94x = 5,969.86 × 1,925.50
4. Step 4: Simplify right side
   3,978.94x = 11,494,965.43
5. Step 5: Solve for x
   x = 11,494,965.43/3,978.94
6. Step 6: Final answer
   x = 2,888.95