Finding the Fourth Proportional to 2,158.80, 3,238.38 and 697.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.80 : 3,238.38 = 697.98 : x
2. Step 2: Convert to fraction form
   2,158.80/3,238.38 = 697.98/x
3. Step 3: Cross multiply
   2,158.80x = 3,238.38 × 697.98
4. Step 4: Simplify right side
   2,158.80x = 2,260,324.47
5. Step 5: Solve for x
   x = 2,260,324.47/2,158.80
6. Step 6: Final answer
   x = 1,047.03