Finding the Fourth Proportional to 2,999.50, 4,139.31 and 1,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,999.50 : 4,139.31 = 1,757.50 : x
2. Step 2: Convert to fraction form
   2,999.50/4,139.31 = 1,757.50/x
3. Step 3: Cross multiply
   2,999.50x = 4,139.31 × 1,757.50
4. Step 4: Simplify right side
   2,999.50x = 7,274,837.33
5. Step 5: Solve for x
   x = 7,274,837.33/2,999.50
6. Step 6: Final answer
   x = 2,425.35