Finding the Fourth Proportional to 1,643.52, 2,268.72 and 1,120.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.52 : 2,268.72 = 1,120.08 : x
2. Step 2: Convert to fraction form
   1,643.52/2,268.72 = 1,120.08/x
3. Step 3: Cross multiply
   1,643.52x = 2,268.72 × 1,120.08
4. Step 4: Simplify right side
   1,643.52x = 2,541,147.90
5. Step 5: Solve for x
   x = 2,541,147.90/1,643.52
6. Step 6: Final answer
   x = 1,546.16