Finding the Fourth Proportional to 2,661.83, 3,987.46 and 1,254.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.83 : 3,987.46 = 1,254.32 : x
2. Step 2: Convert to fraction form
   2,661.83/3,987.46 = 1,254.32/x
3. Step 3: Cross multiply
   2,661.83x = 3,987.46 × 1,254.32
4. Step 4: Simplify right side
   2,661.83x = 5,001,547.41
5. Step 5: Solve for x
   x = 5,001,547.41/2,661.83
6. Step 6: Final answer
   x = 1,878.99