Finding the Fourth Proportional to 3,870.45, 5,804.90 and 1,648.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.45 : 5,804.90 = 1,648.86 : x
2. Step 2: Convert to fraction form
   3,870.45/5,804.90 = 1,648.86/x
3. Step 3: Cross multiply
   3,870.45x = 5,804.90 × 1,648.86
4. Step 4: Simplify right side
   3,870.45x = 9,571,443.58
5. Step 5: Solve for x
   x = 9,571,443.58/3,870.45
6. Step 6: Final answer
   x = 2,472.95