Finding the Fourth Proportional to 2,057.05, 2,839.08 and 1,348.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.05 : 2,839.08 = 1,348.30 : x
2. Step 2: Convert to fraction form
   2,057.05/2,839.08 = 1,348.30/x
3. Step 3: Cross multiply
   2,057.05x = 2,839.08 × 1,348.30
4. Step 4: Simplify right side
   2,057.05x = 3,827,931.56
5. Step 5: Solve for x
   x = 3,827,931.56/2,057.05
6. Step 6: Final answer
   x = 1,860.88