Finding the Fourth Proportional to 1,659.63, 2,289.56 and 1,100.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.63 : 2,289.56 = 1,100.19 : x
2. Step 2: Convert to fraction form
   1,659.63/2,289.56 = 1,100.19/x
3. Step 3: Cross multiply
   1,659.63x = 2,289.56 × 1,100.19
4. Step 4: Simplify right side
   1,659.63x = 2,518,945.52
5. Step 5: Solve for x
   x = 2,518,945.52/1,659.63
6. Step 6: Final answer
   x = 1,517.78