Finding the Fourth Proportional to 1,317.31, 1,972.42 and 1,241.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.31 : 1,972.42 = 1,241.37 : x
2. Step 2: Convert to fraction form
   1,317.31/1,972.42 = 1,241.37/x
3. Step 3: Cross multiply
   1,317.31x = 1,972.42 × 1,241.37
4. Step 4: Simplify right side
   1,317.31x = 2,448,499.91
5. Step 5: Solve for x
   x = 2,448,499.91/1,317.31
6. Step 6: Final answer
   x = 1,858.72