Finding the Fourth Proportional to 2,066.50, 3,100.24 and 698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.50 : 3,100.24 = 698.50 : x
2. Step 2: Convert to fraction form
   2,066.50/3,100.24 = 698.50/x
3. Step 3: Cross multiply
   2,066.50x = 3,100.24 × 698.50
4. Step 4: Simplify right side
   2,066.50x = 2,165,517.64
5. Step 5: Solve for x
   x = 2,165,517.64/2,066.50
6. Step 6: Final answer
   x = 1,047.92