Finding the Fourth Proportional to 1,658.30, 2,488.05 and 1,105.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,658.30 : 2,488.05 = 1,105.25 : x
2. Step 2: Convert to fraction form
   1,658.30/2,488.05 = 1,105.25/x
3. Step 3: Cross multiply
   1,658.30x = 2,488.05 × 1,105.25
4. Step 4: Simplify right side
   1,658.30x = 2,749,904.82
5. Step 5: Solve for x
   x = 2,749,904.82/1,658.30
6. Step 6: Final answer
   x = 1,658.27