Finding the Fourth Proportional to 2,390.25, 3,298.49 and 1,328.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.25 : 3,298.49 = 1,328.02 : x
2. Step 2: Convert to fraction form
   2,390.25/3,298.49 = 1,328.02/x
3. Step 3: Cross multiply
   2,390.25x = 3,298.49 × 1,328.02
4. Step 4: Simplify right side
   2,390.25x = 4,380,445.80
5. Step 5: Solve for x
   x = 4,380,445.80/2,390.25
6. Step 6: Final answer
   x = 1,832.63