Finding the Fourth Proportional to 1,719.25, 2,372.55 and 933.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,719.25 : 2,372.55 = 933.31 : x
2. Step 2: Convert to fraction form
   1,719.25/2,372.55 = 933.31/x
3. Step 3: Cross multiply
   1,719.25x = 2,372.55 × 933.31
4. Step 4: Simplify right side
   1,719.25x = 2,214,324.64
5. Step 5: Solve for x
   x = 2,214,324.64/1,719.25
6. Step 6: Final answer
   x = 1,287.96