Finding the Fourth Proportional to 3,870.42, 5,808.45 and 2,899.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.42 : 5,808.45 = 2,899.14 : x
2. Step 2: Convert to fraction form
   3,870.42/5,808.45 = 2,899.14/x
3. Step 3: Cross multiply
   3,870.42x = 5,808.45 × 2,899.14
4. Step 4: Simplify right side
   3,870.42x = 16,839,509.73
5. Step 5: Solve for x
   x = 16,839,509.73/3,870.42
6. Step 6: Final answer
   x = 4,350.82