Finding the Fourth Proportional to 2,074.78, 2,863.18 and 1,130.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.78 : 2,863.18 = 1,130.55 : x
2. Step 2: Convert to fraction form
   2,074.78/2,863.18 = 1,130.55/x
3. Step 3: Cross multiply
   2,074.78x = 2,863.18 × 1,130.55
4. Step 4: Simplify right side
   2,074.78x = 3,236,968.15
5. Step 5: Solve for x
   x = 3,236,968.15/2,074.78
6. Step 6: Final answer
   x = 1,560.15