Finding the Fourth Proportional to 2,521.20, 3,479.54 and 1,402.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.20 : 3,479.54 = 1,402.24 : x
2. Step 2: Convert to fraction form
   2,521.20/3,479.54 = 1,402.24/x
3. Step 3: Cross multiply
   2,521.20x = 3,479.54 × 1,402.24
4. Step 4: Simplify right side
   2,521.20x = 4,879,150.17
5. Step 5: Solve for x
   x = 4,879,150.17/2,521.20
6. Step 6: Final answer
   x = 1,935.25