Finding the Fourth Proportional to 2,483.80, 3,728.12 and 1,186.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,483.80 : 3,728.12 = 1,186.16 : x
2. Step 2: Convert to fraction form
   2,483.80/3,728.12 = 1,186.16/x
3. Step 3: Cross multiply
   2,483.80x = 3,728.12 × 1,186.16
4. Step 4: Simplify right side
   2,483.80x = 4,422,146.82
5. Step 5: Solve for x
   x = 4,422,146.82/2,483.80
6. Step 6: Final answer
   x = 1,780.40