Finding the Fourth Proportional to 1,422.69, 2,133.83 and 498.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.69 : 2,133.83 = 498.18 : x
2. Step 2: Convert to fraction form
   1,422.69/2,133.83 = 498.18/x
3. Step 3: Cross multiply
   1,422.69x = 2,133.83 × 498.18
4. Step 4: Simplify right side
   1,422.69x = 1,063,028.94
5. Step 5: Solve for x
   x = 1,063,028.94/1,422.69
6. Step 6: Final answer
   x = 747.20