Finding the Fourth Proportional to 1,739.22, 2,399.91 and 1,100.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,739.22 : 2,399.91 = 1,100.91 : x
2. Step 2: Convert to fraction form
   1,739.22/2,399.91 = 1,100.91/x
3. Step 3: Cross multiply
   1,739.22x = 2,399.91 × 1,100.91
4. Step 4: Simplify right side
   1,739.22x = 2,642,084.92
5. Step 5: Solve for x
   x = 2,642,084.92/1,739.22
6. Step 6: Final answer
   x = 1,519.12