Finding the Fourth Proportional to 1,494.54, 2,238.81 and 715.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.54 : 2,238.81 = 715.29 : x
2. Step 2: Convert to fraction form
   1,494.54/2,238.81 = 715.29/x
3. Step 3: Cross multiply
   1,494.54x = 2,238.81 × 715.29
4. Step 4: Simplify right side
   1,494.54x = 1,601,398.40
5. Step 5: Solve for x
   x = 1,601,398.40/1,494.54
6. Step 6: Final answer
   x = 1,071.50