Finding the Fourth Proportional to 2,390.30, 3,298.28 and 1,327.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.30 : 3,298.28 = 1,327.98 : x
2. Step 2: Convert to fraction form
   2,390.30/3,298.28 = 1,327.98/x
3. Step 3: Cross multiply
   2,390.30x = 3,298.28 × 1,327.98
4. Step 4: Simplify right side
   2,390.30x = 4,380,043.23
5. Step 5: Solve for x
   x = 4,380,043.23/2,390.30
6. Step 6: Final answer
   x = 1,832.43