Finding the Fourth Proportional to 1,698.56, 2,548.57 and 919.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.56 : 2,548.57 = 919.11 : x
2. Step 2: Convert to fraction form
   1,698.56/2,548.57 = 919.11/x
3. Step 3: Cross multiply
   1,698.56x = 2,548.57 × 919.11
4. Step 4: Simplify right side
   1,698.56x = 2,342,410.82
5. Step 5: Solve for x
   x = 2,342,410.82/1,698.56
6. Step 6: Final answer
   x = 1,379.06