Finding the Fourth Proportional to 2,098.72, 3,148.37 and 928.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.72 : 3,148.37 = 928.63 : x
2. Step 2: Convert to fraction form
   2,098.72/3,148.37 = 928.63/x
3. Step 3: Cross multiply
   2,098.72x = 3,148.37 × 928.63
4. Step 4: Simplify right side
   2,098.72x = 2,923,650.45
5. Step 5: Solve for x
   x = 2,923,650.45/2,098.72
6. Step 6: Final answer
   x = 1,393.07