Finding the Fourth Proportional to 2,521.68, 3,479.86 and 1,402.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.68 : 3,479.86 = 1,402.56 : x
2. Step 2: Convert to fraction form
   2,521.68/3,479.86 = 1,402.56/x
3. Step 3: Cross multiply
   2,521.68x = 3,479.86 × 1,402.56
4. Step 4: Simplify right side
   2,521.68x = 4,880,714.19
5. Step 5: Solve for x
   x = 4,880,714.19/2,521.68
6. Step 6: Final answer
   x = 1,935.50