Finding the Fourth Proportional to 1,892.49, 2,610.90 and 1,396.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.49 : 2,610.90 = 1,396.31 : x
2. Step 2: Convert to fraction form
   1,892.49/2,610.90 = 1,396.31/x
3. Step 3: Cross multiply
   1,892.49x = 2,610.90 × 1,396.31
4. Step 4: Simplify right side
   1,892.49x = 3,645,625.78
5. Step 5: Solve for x
   x = 3,645,625.78/1,892.49
6. Step 6: Final answer
   x = 1,926.36