Finding the Fourth Proportional to 1,238.16, 1,708.89 and 734.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.16 : 1,708.89 = 734.12 : x
2. Step 2: Convert to fraction form
   1,238.16/1,708.89 = 734.12/x
3. Step 3: Cross multiply
   1,238.16x = 1,708.89 × 734.12
4. Step 4: Simplify right side
   1,238.16x = 1,254,521.78
5. Step 5: Solve for x
   x = 1,254,521.78/1,238.16
6. Step 6: Final answer
   x = 1,013.21