Finding the Fourth Proportional to 3,629.91, 5,445.58 and 1,290.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,629.91 : 5,445.58 = 1,290.03 : x
2. Step 2: Convert to fraction form
   3,629.91/5,445.58 = 1,290.03/x
3. Step 3: Cross multiply
   3,629.91x = 5,445.58 × 1,290.03
4. Step 4: Simplify right side
   3,629.91x = 7,024,940.34
5. Step 5: Solve for x
   x = 7,024,940.34/3,629.91
6. Step 6: Final answer
   x = 1,935.29