Finding the Fourth Proportional to 1,015.59, 1,522.15 and 494.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.59 : 1,522.15 = 494.81 : x
2. Step 2: Convert to fraction form
   1,015.59/1,522.15 = 494.81/x
3. Step 3: Cross multiply
   1,015.59x = 1,522.15 × 494.81
4. Step 4: Simplify right side
   1,015.59x = 753,167.43
5. Step 5: Solve for x
   x = 753,167.43/1,015.59
6. Step 6: Final answer
   x = 741.61