Finding the Fourth Proportional to 1,397.30, 2,092.82 and 1,086.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.30 : 2,092.82 = 1,086.75 : x
2. Step 2: Convert to fraction form
   1,397.30/2,092.82 = 1,086.75/x
3. Step 3: Cross multiply
   1,397.30x = 2,092.82 × 1,086.75
4. Step 4: Simplify right side
   1,397.30x = 2,274,366.70
5. Step 5: Solve for x
   x = 2,274,366.70/1,397.30
6. Step 6: Final answer
   x = 1,627.69