Finding the Fourth Proportional to 2,196.60, 3,296.10 and 898.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.60 : 3,296.10 = 898.20 : x
2. Step 2: Convert to fraction form
   2,196.60/3,296.10 = 898.20/x
3. Step 3: Cross multiply
   2,196.60x = 3,296.10 × 898.20
4. Step 4: Simplify right side
   2,196.60x = 2,960,557.02
5. Step 5: Solve for x
   x = 2,960,557.02/2,196.60
6. Step 6: Final answer
   x = 1,347.79