Finding the Fourth Proportional to 1,981.98, 2,735.10 and 1,097.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.98 : 2,735.10 = 1,097.78 : x
2. Step 2: Convert to fraction form
   1,981.98/2,735.10 = 1,097.78/x
3. Step 3: Cross multiply
   1,981.98x = 2,735.10 × 1,097.78
4. Step 4: Simplify right side
   1,981.98x = 3,002,524.40
5. Step 5: Solve for x
   x = 3,002,524.40/1,981.98
6. Step 6: Final answer
   x = 1,514.91