Finding the Fourth Proportional to 2,629.63, 3,945.05 and 898.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.63 : 3,945.05 = 898.25 : x
2. Step 2: Convert to fraction form
   2,629.63/3,945.05 = 898.25/x
3. Step 3: Cross multiply
   2,629.63x = 3,945.05 × 898.25
4. Step 4: Simplify right side
   2,629.63x = 3,543,641.16
5. Step 5: Solve for x
   x = 3,543,641.16/2,629.63
6. Step 6: Final answer
   x = 1,347.58