Finding the Fourth Proportional to 1,397.67, 2,105.97 and 1,159.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.67 : 2,105.97 = 1,159.53 : x
2. Step 2: Convert to fraction form
   1,397.67/2,105.97 = 1,159.53/x
3. Step 3: Cross multiply
   1,397.67x = 2,105.97 × 1,159.53
4. Step 4: Simplify right side
   1,397.67x = 2,441,935.39
5. Step 5: Solve for x
   x = 2,441,935.39/1,397.67
6. Step 6: Final answer
   x = 1,747.15