Finding the Fourth Proportional to 2,485.04, 3,729.72 and 1,186.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.04 : 3,729.72 = 1,186.88 : x
2. Step 2: Convert to fraction form
   2,485.04/3,729.72 = 1,186.88/x
3. Step 3: Cross multiply
   2,485.04x = 3,729.72 × 1,186.88
4. Step 4: Simplify right side
   2,485.04x = 4,426,730.07
5. Step 5: Solve for x
   x = 4,426,730.07/2,485.04
6. Step 6: Final answer
   x = 1,781.35