Finding the Fourth Proportional to 2,521.86, 3,480.20 and 1,402.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.86 : 3,480.20 = 1,402.84 : x
2. Step 2: Convert to fraction form
   2,521.86/3,480.20 = 1,402.84/x
3. Step 3: Cross multiply
   2,521.86x = 3,480.20 × 1,402.84
4. Step 4: Simplify right side
   2,521.86x = 4,882,163.77
5. Step 5: Solve for x
   x = 4,882,163.77/2,521.86
6. Step 6: Final answer
   x = 1,935.94