Finding the Fourth Proportional to 2,521.31, 3,479.49 and 1,402.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.31 : 3,479.49 = 1,402.56 : x
2. Step 2: Convert to fraction form
   2,521.31/3,479.49 = 1,402.56/x
3. Step 3: Cross multiply
   2,521.31x = 3,479.49 × 1,402.56
4. Step 4: Simplify right side
   2,521.31x = 4,880,193.49
5. Step 5: Solve for x
   x = 4,880,193.49/2,521.31
6. Step 6: Final answer
   x = 1,935.58