Finding the Fourth Proportional to 2,200.32, 3,298.32 and 902.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.32 : 3,298.32 = 902.88 : x
2. Step 2: Convert to fraction form
   2,200.32/3,298.32 = 902.88/x
3. Step 3: Cross multiply
   2,200.32x = 3,298.32 × 902.88
4. Step 4: Simplify right side
   2,200.32x = 2,977,987.16
5. Step 5: Solve for x
   x = 2,977,987.16/2,200.32
6. Step 6: Final answer
   x = 1,353.43