Finding the Fourth Proportional to 2,892.42, 3,991.50 and 1,899.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.42 : 3,991.50 = 1,899.36 : x
2. Step 2: Convert to fraction form
   2,892.42/3,991.50 = 1,899.36/x
3. Step 3: Cross multiply
   2,892.42x = 3,991.50 × 1,899.36
4. Step 4: Simplify right side
   2,892.42x = 7,581,295.44
5. Step 5: Solve for x
   x = 7,581,295.44/2,892.42
6. Step 6: Final answer
   x = 2,621.09