Finding the Fourth Proportional to 2,158.04, 3,236.76 and 698.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.04 : 3,236.76 = 698.18 : x
2. Step 2: Convert to fraction form
   2,158.04/3,236.76 = 698.18/x
3. Step 3: Cross multiply
   2,158.04x = 3,236.76 × 698.18
4. Step 4: Simplify right side
   2,158.04x = 2,259,841.10
5. Step 5: Solve for x
   x = 2,259,841.10/2,158.04
6. Step 6: Final answer
   x = 1,047.17