Finding the Fourth Proportional to 2,015.71, 3,022.43 and 698.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.71 : 3,022.43 = 698.76 : x
2. Step 2: Convert to fraction form
   2,015.71/3,022.43 = 698.76/x
3. Step 3: Cross multiply
   2,015.71x = 3,022.43 × 698.76
4. Step 4: Simplify right side
   2,015.71x = 2,111,953.19
5. Step 5: Solve for x
   x = 2,111,953.19/2,015.71
6. Step 6: Final answer
   x = 1,047.75