Finding the Fourth Proportional to 1,096.32, 1,642.50 and 602.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.32 : 1,642.50 = 602.20 : x
2. Step 2: Convert to fraction form
   1,096.32/1,642.50 = 602.20/x
3. Step 3: Cross multiply
   1,096.32x = 1,642.50 × 602.20
4. Step 4: Simplify right side
   1,096.32x = 989,105.29
5. Step 5: Solve for x
   x = 989,105.29/1,096.32
6. Step 6: Final answer
   x = 902.20