Finding the Fourth Proportional to 2,520.70, 3,478.18 and 1,401.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.70 : 3,478.18 = 1,401.62 : x
2. Step 2: Convert to fraction form
   2,520.70/3,478.18 = 1,401.62/x
3. Step 3: Cross multiply
   2,520.70x = 3,478.18 × 1,401.62
4. Step 4: Simplify right side
   2,520.70x = 4,875,086.65
5. Step 5: Solve for x
   x = 4,875,086.65/2,520.70
6. Step 6: Final answer
   x = 1,934.02