Finding the Fourth Proportional to 2,521.42, 3,480.12 and 1,402.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.42 : 3,480.12 = 1,402.75 : x
2. Step 2: Convert to fraction form
   2,521.42/3,480.12 = 1,402.75/x
3. Step 3: Cross multiply
   2,521.42x = 3,480.12 × 1,402.75
4. Step 4: Simplify right side
   2,521.42x = 4,881,738.33
5. Step 5: Solve for x
   x = 4,881,738.33/2,521.42
6. Step 6: Final answer
   x = 1,936.11