Finding the Fourth Proportional to 1,274.22, 1,910.72 and 494.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274.22 : 1,910.72 = 494.59 : x
2. Step 2: Convert to fraction form
   1,274.22/1,910.72 = 494.59/x
3. Step 3: Cross multiply
   1,274.22x = 1,910.72 × 494.59
4. Step 4: Simplify right side
   1,274.22x = 945,023.00
5. Step 5: Solve for x
   x = 945,023.00/1,274.22
6. Step 6: Final answer
   x = 741.65