Finding the Fourth Proportional to 2,646.32, 3,969.52 and 698.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.32 : 3,969.52 = 698.72 : x
2. Step 2: Convert to fraction form
   2,646.32/3,969.52 = 698.72/x
3. Step 3: Cross multiply
   2,646.32x = 3,969.52 × 698.72
4. Step 4: Simplify right side
   2,646.32x = 2,773,583.01
5. Step 5: Solve for x
   x = 2,773,583.01/2,646.32
6. Step 6: Final answer
   x = 1,048.09