Finding the Fourth Proportional to 1,317.82, 1,966.50 and 1,142.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.82 : 1,966.50 = 1,142.86 : x
2. Step 2: Convert to fraction form
   1,317.82/1,966.50 = 1,142.86/x
3. Step 3: Cross multiply
   1,317.82x = 1,966.50 × 1,142.86
4. Step 4: Simplify right side
   1,317.82x = 2,247,431.33
5. Step 5: Solve for x
   x = 2,247,431.33/1,317.82
6. Step 6: Final answer
   x = 1,705.42