Finding the Fourth Proportional to 2,520.81, 3,478.35 and 1,401.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.81 : 3,478.35 = 1,401.57 : x
2. Step 2: Convert to fraction form
   2,520.81/3,478.35 = 1,401.57/x
3. Step 3: Cross multiply
   2,520.81x = 3,478.35 × 1,401.57
4. Step 4: Simplify right side
   2,520.81x = 4,875,151.01
5. Step 5: Solve for x
   x = 4,875,151.01/2,520.81
6. Step 6: Final answer
   x = 1,933.96