Finding the Fourth Proportional to 2,874.69, 4,311.43 and 927.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.69 : 4,311.43 = 927.05 : x
2. Step 2: Convert to fraction form
   2,874.69/4,311.43 = 927.05/x
3. Step 3: Cross multiply
   2,874.69x = 4,311.43 × 927.05
4. Step 4: Simplify right side
   2,874.69x = 3,996,887.31
5. Step 5: Solve for x
   x = 3,996,887.31/2,874.69
6. Step 6: Final answer
   x = 1,390.37