Finding the Fourth Proportional to 1,736.88, 2,393.40 and 1,238.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.88 : 2,393.40 = 1,238.10 : x
2. Step 2: Convert to fraction form
   1,736.88/2,393.40 = 1,238.10/x
3. Step 3: Cross multiply
   1,736.88x = 2,393.40 × 1,238.10
4. Step 4: Simplify right side
   1,736.88x = 2,963,268.54
5. Step 5: Solve for x
   x = 2,963,268.54/1,736.88
6. Step 6: Final answer
   x = 1,706.09