Finding the Fourth Proportional to 2,987.88, 4,483.64 and 1,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.88 : 4,483.64 = 1,256.50 : x
2. Step 2: Convert to fraction form
   2,987.88/4,483.64 = 1,256.50/x
3. Step 3: Cross multiply
   2,987.88x = 4,483.64 × 1,256.50
4. Step 4: Simplify right side
   2,987.88x = 5,633,693.66
5. Step 5: Solve for x
   x = 5,633,693.66/2,987.88
6. Step 6: Final answer
   x = 1,885.52