Finding the Fourth Proportional to 2,978.30, 4,100.71 and 2,529.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.30 : 4,100.71 = 2,529.23 : x
2. Step 2: Convert to fraction form
   2,978.30/4,100.71 = 2,529.23/x
3. Step 3: Cross multiply
   2,978.30x = 4,100.71 × 2,529.23
4. Step 4: Simplify right side
   2,978.30x = 10,371,638.75
5. Step 5: Solve for x
   x = 10,371,638.75/2,978.30
6. Step 6: Final answer
   x = 3,482.40