Finding the Fourth Proportional to 2,623.57, 3,925.92 and 1,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.57 : 3,925.92 = 1,928.50 : x
2. Step 2: Convert to fraction form
   2,623.57/3,925.92 = 1,928.50/x
3. Step 3: Cross multiply
   2,623.57x = 3,925.92 × 1,928.50
4. Step 4: Simplify right side
   2,623.57x = 7,571,136.72
5. Step 5: Solve for x
   x = 7,571,136.72/2,623.57
6. Step 6: Final answer
   x = 2,885.81