Finding the Fourth Proportional to 1,659.72, 2,291.37 and 1,100.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.72 : 2,291.37 = 1,100.95 : x
2. Step 2: Convert to fraction form
   1,659.72/2,291.37 = 1,100.95/x
3. Step 3: Cross multiply
   1,659.72x = 2,291.37 × 1,100.95
4. Step 4: Simplify right side
   1,659.72x = 2,522,686.58
5. Step 5: Solve for x
   x = 2,522,686.58/1,659.72
6. Step 6: Final answer
   x = 1,519.94