Finding the Fourth Proportional to 2,899.18, 3,997.92 and 1,903.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,899.18 : 3,997.92 = 1,903.42 : x
2. Step 2: Convert to fraction form
   2,899.18/3,997.92 = 1,903.42/x
3. Step 3: Cross multiply
   2,899.18x = 3,997.92 × 1,903.42
4. Step 4: Simplify right side
   2,899.18x = 7,609,720.89
5. Step 5: Solve for x
   x = 7,609,720.89/2,899.18
6. Step 6: Final answer
   x = 2,624.78