Finding the Fourth Proportional to 2,674.31, 4,013.90 and 1,857.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,674.31 : 4,013.90 = 1,857.83 : x
2. Step 2: Convert to fraction form
   2,674.31/4,013.90 = 1,857.83/x
3. Step 3: Cross multiply
   2,674.31x = 4,013.90 × 1,857.83
4. Step 4: Simplify right side
   2,674.31x = 7,457,134.55
5. Step 5: Solve for x
   x = 7,457,134.55/2,674.31
6. Step 6: Final answer
   x = 2,788.43