Finding the Fourth Proportional to 2,007.76, 3,017.40 and 1,860.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.76 : 3,017.40 = 1,860.88 : x
2. Step 2: Convert to fraction form
   2,007.76/3,017.40 = 1,860.88/x
3. Step 3: Cross multiply
   2,007.76x = 3,017.40 × 1,860.88
4. Step 4: Simplify right side
   2,007.76x = 5,615,019.31
5. Step 5: Solve for x
   x = 5,615,019.31/2,007.76
6. Step 6: Final answer
   x = 2,796.66