Finding the Fourth Proportional to 2,521.91, 3,479.85 and 1,402.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.91 : 3,479.85 = 1,402.86 : x
2. Step 2: Convert to fraction form
   2,521.91/3,479.85 = 1,402.86/x
3. Step 3: Cross multiply
   2,521.91x = 3,479.85 × 1,402.86
4. Step 4: Simplify right side
   2,521.91x = 4,881,734.58
5. Step 5: Solve for x
   x = 4,881,734.58/2,521.91
6. Step 6: Final answer
   x = 1,935.73