Finding the Fourth Proportional to 1,698.18, 2,545.46 and 1,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.18 : 2,545.46 = 1,111.34 : x
2. Step 2: Convert to fraction form
   1,698.18/2,545.46 = 1,111.34/x
3. Step 3: Cross multiply
   1,698.18x = 2,545.46 × 1,111.34
4. Step 4: Simplify right side
   1,698.18x = 2,828,871.52
5. Step 5: Solve for x
   x = 2,828,871.52/1,698.18
6. Step 6: Final answer
   x = 1,665.83