Finding the Fourth Proportional to 2,978.43, 4,100.88 and 2,529.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.43 : 4,100.88 = 2,529.36 : x
2. Step 2: Convert to fraction form
   2,978.43/4,100.88 = 2,529.36/x
3. Step 3: Cross multiply
   2,978.43x = 4,100.88 × 2,529.36
4. Step 4: Simplify right side
   2,978.43x = 10,372,601.84
5. Step 5: Solve for x
   x = 10,372,601.84/2,978.43
6. Step 6: Final answer
   x = 3,482.57