Finding the Fourth Proportional to 1,698.72, 2,545.30 and 1,048.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.72 : 2,545.30 = 1,048.08 : x
2. Step 2: Convert to fraction form
   1,698.72/2,545.30 = 1,048.08/x
3. Step 3: Cross multiply
   1,698.72x = 2,545.30 × 1,048.08
4. Step 4: Simplify right side
   1,698.72x = 2,667,678.02
5. Step 5: Solve for x
   x = 2,667,678.02/1,698.72
6. Step 6: Final answer
   x = 1,570.40