Finding the Fourth Proportional to 2,429.58, 3,645 and 698.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.58 : 3,645 = 698.34 : x
2. Step 2: Convert to fraction form
   2,429.58/3,645 = 698.34/x
3. Step 3: Cross multiply
   2,429.58x = 3,645 × 698.34
4. Step 4: Simplify right side
   2,429.58x = 2,545,449.30
5. Step 5: Solve for x
   x = 2,545,449.30/2,429.58
6. Step 6: Final answer
   x = 1,047.69