Finding the Fourth Proportional to 2,540.98, 3,810.66 and 981.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.98 : 3,810.66 = 981.10 : x
2. Step 2: Convert to fraction form
   2,540.98/3,810.66 = 981.10/x
3. Step 3: Cross multiply
   2,540.98x = 3,810.66 × 981.10
4. Step 4: Simplify right side
   2,540.98x = 3,738,638.53
5. Step 5: Solve for x
   x = 3,738,638.53/2,540.98
6. Step 6: Final answer
   x = 1,471.34