Finding the Fourth Proportional to 2,630.71, 3,630.39 and 1,435.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.71 : 3,630.39 = 1,435.78 : x
2. Step 2: Convert to fraction form
   2,630.71/3,630.39 = 1,435.78/x
3. Step 3: Cross multiply
   2,630.71x = 3,630.39 × 1,435.78
4. Step 4: Simplify right side
   2,630.71x = 5,212,423.20
5. Step 5: Solve for x
   x = 5,212,423.20/2,630.71
6. Step 6: Final answer
   x = 1,981.38