Finding the Fourth Proportional to 2,630.34, 3,629.78 and 1,435.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.34 : 3,629.78 = 1,435.30 : x
2. Step 2: Convert to fraction form
   2,630.34/3,629.78 = 1,435.30/x
3. Step 3: Cross multiply
   2,630.34x = 3,629.78 × 1,435.30
4. Step 4: Simplify right side
   2,630.34x = 5,209,823.23
5. Step 5: Solve for x
   x = 5,209,823.23/2,630.34
6. Step 6: Final answer
   x = 1,980.67