Finding the Fourth Proportional to 2,429.76, 3,645.18 and 698.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.76 : 3,645.18 = 698.25 : x
2. Step 2: Convert to fraction form
   2,429.76/3,645.18 = 698.25/x
3. Step 3: Cross multiply
   2,429.76x = 3,645.18 × 698.25
4. Step 4: Simplify right side
   2,429.76x = 2,545,246.94
5. Step 5: Solve for x
   x = 2,545,246.94/2,429.76
6. Step 6: Final answer
   x = 1,047.53