Finding the Fourth Proportional to 2,630.16, 3,945.72 and 898.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.16 : 3,945.72 = 898.36 : x
2. Step 2: Convert to fraction form
   2,630.16/3,945.72 = 898.36/x
3. Step 3: Cross multiply
   2,630.16x = 3,945.72 × 898.36
4. Step 4: Simplify right side
   2,630.16x = 3,544,677.02
5. Step 5: Solve for x
   x = 3,544,677.02/2,630.16
6. Step 6: Final answer
   x = 1,347.70