Finding the Fourth Proportional to 2,889.83, 4,334.73 and 698.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.83 : 4,334.73 = 698.55 : x
2. Step 2: Convert to fraction form
   2,889.83/4,334.73 = 698.55/x
3. Step 3: Cross multiply
   2,889.83x = 4,334.73 × 698.55
4. Step 4: Simplify right side
   2,889.83x = 3,028,025.64
5. Step 5: Solve for x
   x = 3,028,025.64/2,889.83
6. Step 6: Final answer
   x = 1,047.82