Finding the Fourth Proportional to 2,520.86, 3,478.82 and 1,401.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.86 : 3,478.82 = 1,401.84 : x
2. Step 2: Convert to fraction form
   2,520.86/3,478.82 = 1,401.84/x
3. Step 3: Cross multiply
   2,520.86x = 3,478.82 × 1,401.84
4. Step 4: Simplify right side
   2,520.86x = 4,876,742.02
5. Step 5: Solve for x
   x = 4,876,742.02/2,520.86
6. Step 6: Final answer
   x = 1,934.56