Finding the Fourth Proportional to 2,892.40, 4,339.96 and 2,749.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.40 : 4,339.96 = 2,749.79 : x
2. Step 2: Convert to fraction form
   2,892.40/4,339.96 = 2,749.79/x
3. Step 3: Cross multiply
   2,892.40x = 4,339.96 × 2,749.79
4. Step 4: Simplify right side
   2,892.40x = 11,933,978.61
5. Step 5: Solve for x
   x = 11,933,978.61/2,892.40
6. Step 6: Final answer
   x = 4,125.98