Finding the Fourth Proportional to 1,238.10, 1,707.93 and 1,004.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.10 : 1,707.93 = 1,004.82 : x
2. Step 2: Convert to fraction form
   1,238.10/1,707.93 = 1,004.82/x
3. Step 3: Cross multiply
   1,238.10x = 1,707.93 × 1,004.82
4. Step 4: Simplify right side
   1,238.10x = 1,716,162.22
5. Step 5: Solve for x
   x = 1,716,162.22/1,238.10
6. Step 6: Final answer
   x = 1,386.13