Finding the Fourth Proportional to 2,520.17, 3,478.38 and 1,401.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.17 : 3,478.38 = 1,401.49 : x
2. Step 2: Convert to fraction form
   2,520.17/3,478.38 = 1,401.49/x
3. Step 3: Cross multiply
   2,520.17x = 3,478.38 × 1,401.49
4. Step 4: Simplify right side
   2,520.17x = 4,874,914.79
5. Step 5: Solve for x
   x = 4,874,914.79/2,520.17
6. Step 6: Final answer
   x = 1,934.36