Finding the Fourth Proportional to 2,390.16, 3,298.59 and 1,328.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.16 : 3,298.59 = 1,328.17 : x
2. Step 2: Convert to fraction form
   2,390.16/3,298.59 = 1,328.17/x
3. Step 3: Cross multiply
   2,390.16x = 3,298.59 × 1,328.17
4. Step 4: Simplify right side
   2,390.16x = 4,381,097.38
5. Step 5: Solve for x
   x = 4,381,097.38/2,390.16
6. Step 6: Final answer
   x = 1,832.98