Finding the Fourth Proportional to 3,758.04, 5,185.50 and 2,431.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,758.04 : 5,185.50 = 2,431.80 : x
2. Step 2: Convert to fraction form
   3,758.04/5,185.50 = 2,431.80/x
3. Step 3: Cross multiply
   3,758.04x = 5,185.50 × 2,431.80
4. Step 4: Simplify right side
   3,758.04x = 12,610,098.90
5. Step 5: Solve for x
   x = 12,610,098.90/3,758.04
6. Step 6: Final answer
   x = 3,355.50