Finding the Fourth Proportional to 1,145.10, 1,717.38 and 938.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.10 : 1,717.38 = 938.82 : x
2. Step 2: Convert to fraction form
   1,145.10/1,717.38 = 938.82/x
3. Step 3: Cross multiply
   1,145.10x = 1,717.38 × 938.82
4. Step 4: Simplify right side
   1,145.10x = 1,612,310.69
5. Step 5: Solve for x
   x = 1,612,310.69/1,145.10
6. Step 6: Final answer
   x = 1,408.01