Finding the Fourth Proportional to 2,774.66, 3,823.76 and 1,987.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.66 : 3,823.76 = 1,987.34 : x
2. Step 2: Convert to fraction form
   2,774.66/3,823.76 = 1,987.34/x
3. Step 3: Cross multiply
   2,774.66x = 3,823.76 × 1,987.34
4. Step 4: Simplify right side
   2,774.66x = 7,599,111.20
5. Step 5: Solve for x
   x = 7,599,111.20/2,774.66
6. Step 6: Final answer
   x = 2,738.75