Finding the Fourth Proportional to 1,711.10, 2,359.42 and 1,238.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,711.10 : 2,359.42 = 1,238.06 : x
2. Step 2: Convert to fraction form
   1,711.10/2,359.42 = 1,238.06/x
3. Step 3: Cross multiply
   1,711.10x = 2,359.42 × 1,238.06
4. Step 4: Simplify right side
   1,711.10x = 2,921,103.53
5. Step 5: Solve for x
   x = 2,921,103.53/1,711.10
6. Step 6: Final answer
   x = 1,707.15