Finding the Fourth Proportional to 2,326.78, 3,208.74 and 1,528.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.78 : 3,208.74 = 1,528.69 : x
2. Step 2: Convert to fraction form
   2,326.78/3,208.74 = 1,528.69/x
3. Step 3: Cross multiply
   2,326.78x = 3,208.74 × 1,528.69
4. Step 4: Simplify right side
   2,326.78x = 4,905,168.75
5. Step 5: Solve for x
   x = 4,905,168.75/2,326.78
6. Step 6: Final answer
   x = 2,108.14