Finding the Fourth Proportional to 2,521.31, 3,479.56 and 1,526.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.31 : 3,479.56 = 1,526.63 : x
2. Step 2: Convert to fraction form
   2,521.31/3,479.56 = 1,526.63/x
3. Step 3: Cross multiply
   2,521.31x = 3,479.56 × 1,526.63
4. Step 4: Simplify right side
   2,521.31x = 5,311,979.47
5. Step 5: Solve for x
   x = 5,311,979.47/2,521.31
6. Step 6: Final answer
   x = 2,106.84