Finding the Fourth Proportional to 2,271.98, 3,406.51 and 1,085.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.98 : 3,406.51 = 1,085.53 : x
2. Step 2: Convert to fraction form
   2,271.98/3,406.51 = 1,085.53/x
3. Step 3: Cross multiply
   2,271.98x = 3,406.51 × 1,085.53
4. Step 4: Simplify right side
   2,271.98x = 3,697,868.80
5. Step 5: Solve for x
   x = 3,697,868.80/2,271.98
6. Step 6: Final answer
   x = 1,627.60