Finding the Fourth Proportional to 1,422.56, 2,133.59 and 498.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.56 : 2,133.59 = 498.15 : x
2. Step 2: Convert to fraction form
   1,422.56/2,133.59 = 498.15/x
3. Step 3: Cross multiply
   1,422.56x = 2,133.59 × 498.15
4. Step 4: Simplify right side
   1,422.56x = 1,062,848.17
5. Step 5: Solve for x
   x = 1,062,848.17/1,422.56
6. Step 6: Final answer
   x = 747.14