Finding the Fourth Proportional to 1,647.64, 2,275.59 and 1,090.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.64 : 2,275.59 = 1,090.56 : x
2. Step 2: Convert to fraction form
   1,647.64/2,275.59 = 1,090.56/x
3. Step 3: Cross multiply
   1,647.64x = 2,275.59 × 1,090.56
4. Step 4: Simplify right side
   1,647.64x = 2,481,680.05
5. Step 5: Solve for x
   x = 2,481,680.05/1,647.64
6. Step 6: Final answer
   x = 1,506.20