Finding the Fourth Proportional to 2,390.04, 3,298.86 and 2,272.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.04 : 3,298.86 = 2,272.86 : x
2. Step 2: Convert to fraction form
   2,390.04/3,298.86 = 2,272.86/x
3. Step 3: Cross multiply
   2,390.04x = 3,298.86 × 2,272.86
4. Step 4: Simplify right side
   2,390.04x = 7,497,846.94
5. Step 5: Solve for x
   x = 7,497,846.94/2,390.04
6. Step 6: Final answer
   x = 3,137.12