Finding the Fourth Proportional to 2,390.18, 3,298.52 and 1,328.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.18 : 3,298.52 = 1,328.00 : x
2. Step 2: Convert to fraction form
   2,390.18/3,298.52 = 1,328.00/x
3. Step 3: Cross multiply
   2,390.18x = 3,298.52 × 1,328.00
4. Step 4: Simplify right side
   2,390.18x = 4,380,421.39
5. Step 5: Solve for x
   x = 4,380,421.39/2,390.18
6. Step 6: Final answer
   x = 1,832.68