Finding the Fourth Proportional to 1,647.33, 2,271.61 and 1,149.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.33 : 2,271.61 = 1,149.78 : x
2. Step 2: Convert to fraction form
   1,647.33/2,271.61 = 1,149.78/x
3. Step 3: Cross multiply
   1,647.33x = 2,271.61 × 1,149.78
4. Step 4: Simplify right side
   1,647.33x = 2,611,851.75
5. Step 5: Solve for x
   x = 2,611,851.75/1,647.33
6. Step 6: Final answer
   x = 1,585.51