Finding the Fourth Proportional to 1,900.42, 2,851.18 and 1,380.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.42 : 2,851.18 = 1,380.94 : x
2. Step 2: Convert to fraction form
   1,900.42/2,851.18 = 1,380.94/x
3. Step 3: Cross multiply
   1,900.42x = 2,851.18 × 1,380.94
4. Step 4: Simplify right side
   1,900.42x = 3,937,308.51
5. Step 5: Solve for x
   x = 3,937,308.51/1,900.42
6. Step 6: Final answer
   x = 2,071.81